| The 8th Gen Riviera Resource |
| | FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info | |
|
+32chitown_riv98 Abaddon 95RivieraVino matt270avian joshuadalegrimes Rivnut 98riv al_roethlisberger highwaywarrior LARRY70GS charlieRobinson ghpcnm Jelorian Jamax sqrivi norsky86 ewolfe0050 robotennis61 Rickw deekster_caddy 1998 Riv Jack the R Chicken TonySmooth89 texasfan010 turtleman Mr.Riviera jrocha ¤DoughBoy¤ okiedrifter racinfan AA 36 posters | |
Author | Message |
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AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Feb 18, 2013 1:18 pm | |
| In the OP, the spec is for "93-on".
This was probably taken from a source written in 92-93, before the 95 Riv was introduced. At the time, it was correct!
Cliff's notes: beware of any spec or part for a "93-on Riviera". _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | ghpcnm Aficionado
Name : Dave Age : 71 Location : FLORIDA / The Stand Your Ground State Joined : 2011-02-21 Post Count : 2044 Merit : 23
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Feb 18, 2013 5:13 pm | |
| As noted in one of my previous posts, I purchased a set of rims off a 2011 Lacrosse and they did not fit. The bolt pattern was off. I had to have them redrilled to fit. BEWARE !!! | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Feb 18, 2013 6:40 pm | |
| 2010-2011 LaCrosse wheels are 5x120mm, although some databases do show them as 5x115, same as Riviera. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | charlieRobinson Expert
Name : Charlie Age : 38 Location : Toledo, OH Joined : 2011-05-17 Post Count : 3922 Merit : 31
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Mar 04, 2013 10:54 pm | |
| What's the weight of the 12 spoke OEMs like on my riv? I know i've seen it posted on here somewhere before. Trying to do weight comparisons. And what about the offset? Will a 40-45mm offset throw something off? Thank you!!! | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Tue Mar 05, 2013 1:48 am | |
| OEM wheels + tires weigh about 50 lb per (not 100% sure on that)
If you get a larger wheel, usually you're going to see a weight increase because the larger size tire will be heavier, even if the wheel design is lighter.
Mr.Riviera wrote on page 1 that our OEM rims have +32mm offset. The rims are 6.5 or 7" wide, depending on the style.
The offset you choose depends on how wide of wheel (or tire) you get. If you stay with +32 offset, using a wider wheel or tire will "grow" both inward and outward an equal amount, so if you go from 7" wide to 8" wide wheels, you'll gain 1/2" on in and outside edges of the wheel/tire, using +32.
For the same 7" to 8" increase, if you choose a wheel with more offset, like +45mm, you'll gain all of that 1" on the inside edge, keeping the outside edge looking the same as stock. Yes, there's more of a chance the tire could rub at fully locked steering.
If you go negative, say +19mm offset, and go from 7" to 8" wide wheels, the inside edge doesn't move, but the outside edge will go out a full 1". Extreme negative offsets are what started the term "roller skate" as applied to cars with wheels that stick out.
It's worth mentioning that as a wheel grows wider, if the offset doesn't change, the spokes will move inward from the outside rim, causing a deep-dish effect. Increasing the positive offset helps to keep the spokes in about the same position relative to the outside rim, so the look of the wheel doesn't really change, even though it gets wider. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | highwaywarrior Fanatic
Name : daryl Age : 40 Location : chesapeake va Joined : 2012-06-09 Post Count : 403 Merit : 2
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Tue Mar 05, 2013 1:39 pm | |
| http://www.latemodelrestoration.com/item/LRS-1007SCK/1994-04-Mustang-Chrome-Sc-Style-Wheel-17X9. I'm really wondering if these will fit. | |
| | | charlieRobinson Expert
Name : Charlie Age : 38 Location : Toledo, OH Joined : 2011-05-17 Post Count : 3922 Merit : 31
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Tue Mar 05, 2013 2:02 pm | |
| I would imagine 'rollerskate' wheels would increase drag, no? | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Tue Mar 05, 2013 5:31 pm | |
| Yes, but so to wider wheels in general. There is aero drag under the car as well as on the sides, and then there is more rolling resistance. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | charlieRobinson Expert
Name : Charlie Age : 38 Location : Toledo, OH Joined : 2011-05-17 Post Count : 3922 Merit : 31
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Sun Mar 24, 2013 11:57 am | |
| What tire pressure yall runnning at? OEM specs say 30psi all around. My tires are rated for up to 50psi.
| |
| | | al_roethlisberger Junkie
Name : Al Roethlisberger Age : 55 Location : Sanford, NC Joined : 2013-03-12 Post Count : 960 Merit : 24
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Sun Mar 24, 2013 2:23 pm | |
| Has anyone tried the 17" Buick LaCrosse wheels from 2007/2008? Wondering if the bolt patter and offset are compatible.
The listing I've seen says they are 5x115, but I see that some later LaCrosse wheels are 5x120.
Thanks Al
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| | | Mr.Riviera Expert
Name : Matthew Age : 37 Location : Florida Joined : 2007-01-17 Post Count : 4394 Merit : 101
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Sun Mar 24, 2013 4:11 pm | |
| - charlieRobinson wrote:
- What tire pressure yall runnning at? OEM specs say 30psi all around. My tires are rated for up to 50psi.
i run 42 up front and 46 out back. I also have different tires front v.s back and they are 245/45/18 so not quite comparable to stock. When i did have the 16's on the car i would run 35 front and 38 rear. Much more than 35psi and traction became a problem for me, under even normal driving. I like my rears a bit overinflated to try and get better mileage and to help balance my handling. _________________ 1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Sun Mar 24, 2013 7:55 pm | |
| - al_roethlisberger wrote:
Has anyone tried the 17" Buick LaCrosse wheels from 2007/2008? Wondering if the bolt patter and offset are compatible.
The listing I've seen says they are 5x115, but I see that some later LaCrosse wheels are 5x120.
Thanks Al
The Lacrosse bolt pattern is 5x120, though some incorrectly assume (and list) them to be 5x115. One of our members actually tried a set to find they wouldn't fit. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | charlieRobinson Expert
Name : Charlie Age : 38 Location : Toledo, OH Joined : 2011-05-17 Post Count : 3922 Merit : 31
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Sun Mar 24, 2013 10:28 pm | |
| - Mr.Riviera wrote:
- charlieRobinson wrote:
- What tire pressure yall runnning at? OEM specs say 30psi all around. My tires are rated for up to 50psi.
i run 42 up front and 46 out back. I also have different tires front v.s back and they are 245/45/18 so not quite comparable to stock.
When i did have the 16's on the car i would run 35 front and 38 rear. Much more than 35psi and traction became a problem for me, under even normal driving.
I like my rears a bit overinflated to try and get better mileage and to help balance my handling. I have been running 31 in the front and 33 in the back, cold. I also like more in the back as I find it helps with cornering. Haven't noticed a difference in mileage from 30psi all around though. | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Mar 25, 2013 7:17 am | |
| You may want to consider load in addition to pressure. Our cars are front heavy, so they need higher pressure up front to counter the weight. I run 45 front/ 40 rear for summer 45 profile, 40 front/ 35 rear for winter 60 profile. You can run higher rear pressure, but you'll have a smaller contact patch and less grip in exchange for slightly increased MPG. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | charlieRobinson Expert
Name : Charlie Age : 38 Location : Toledo, OH Joined : 2011-05-17 Post Count : 3922 Merit : 31
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Mar 25, 2013 7:53 am | |
| Maybe, but then why does OEM specs call for 30psi all the way around? You think theyd consider curb weight prior to putting a number on this, yeah?
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| | | LARRY70GS Aficionado
Name : Larry Age : 67 Location : Oakland Gardens, NY Joined : 2007-01-23 Post Count : 2179 Merit : 149
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Mar 25, 2013 8:05 am | |
| - charlieRobinson wrote:
- Maybe, but then why does OEM specs call for 30psi all the way around? You think theyd consider curb weight prior to putting a number on this, yeah?
Tires have a maximum load rating at a certain psi. Tires today list higher pressure maximums than in past years. That doesn't mean that you have to run the maximum, just that the tire is capable of supporting a higher load. You can adjust handling characteristics by adjusting air pressures front to rear. You can reduce understeer by running higher pressure in the front verses the rear, for instance. Higher pressure can produce a harsher ride, but reduced rolling resistance for better MPG. The Riviera was a luxury car, so soft ride was priority for Buick. 30 psi front rear was what Buick listed for the best overall ride and handling. You can experiment though.. _________________ 98 Riviera SC3800 All stock except gutted air box. 1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ Best MPH, 116.06 MPH, Best ET, 11.54 https://www.youtube.com/watch?v=UHCda-t_Jls https://www.youtube.com/watch?v=sfT2tEO4XcU
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| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Mon Mar 25, 2013 12:29 pm | |
| - Quote :
- The Riviera was a luxury car, so soft ride was priority for Buick. 30 psi front rear was what Buick listed for the best overall ride and handling.
Exactly - soft ride comfort was priority for '90s Buick not handling performance. A lot has changed in 15 years. Cars typically have lower profile tires now with bigger wheels. You can see from the side of the car the contact patch is much bigger up front than in rear. Even though the pressures are the same, the load is greater up front. When you think about weight transfer during a hard stop, the ratio of grip becomes even more unevenly distributed. _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | highwaywarrior Fanatic
Name : daryl Age : 40 Location : chesapeake va Joined : 2012-06-09 Post Count : 403 Merit : 2
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Tue Apr 09, 2013 4:32 pm | |
| Question, i noticed dodges have the same bolt pattern, the chargers, but instead of the 40 offset they have a 20 offset... does that mean one would have to run a spacer to push the wheels out or am i missing something, for instance the wheel i was looking at has a 20 mm offset with a 5.28 backspacing..... | |
| | | LARRY70GS Aficionado
Name : Larry Age : 67 Location : Oakland Gardens, NY Joined : 2007-01-23 Post Count : 2179 Merit : 149
| Subject: temp Tue Apr 09, 2013 6:07 pm | |
| The term offset is confusing to some people. There is positive offset and negative offset. Offset is the distance from THE CENTER LINE OF the wheel, to the mounting surface. With the older cars like my 70, I encourage guys to use back spacing measurements. Back spacing is the distance from the back side of the rim to the mounting surface. If the offset you are talking about is positive, less offset would move the wheel further outboard. A spacer would move it even further out board. Measure the back spacing of your Riviera wheels, and compare it to the Mopar wheels. You would also need to consider the width of both wheels to make an accurate comparison.
http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101 _________________ 98 Riviera SC3800 All stock except gutted air box. 1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ Best MPH, 116.06 MPH, Best ET, 11.54 https://www.youtube.com/watch?v=UHCda-t_Jls https://www.youtube.com/watch?v=sfT2tEO4XcU
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| | | al_roethlisberger Junkie
Name : Al Roethlisberger Age : 55 Location : Sanford, NC Joined : 2013-03-12 Post Count : 960 Merit : 24
| Subject: temp Fri Apr 12, 2013 11:15 am | |
| It would be great, but perhaps hard/time-consuming, to put together a x-reference of all OEM Buick 1995+ 16,17,18 wheels that are a known bolt-on fit for the 95-99 Rivieras.
There seem to be quite a few questions posted about "Does Buick X wheel fit" along with the aftermarket questions.
The specs are in this thread about the correct bolt pattern, hub diameter and stock offset of course. But if we had a thread/FAQ that was updated as folks verified certain Buick wheels, that might be helpful.
Just a thought. Al
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| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Fri Apr 12, 2013 5:27 pm | |
| I think any 5x115 (or 5x114.3) bolt pattern wheel would work with the correct positive offset. There were 5x115 on many GM cars in the '80s and '90s that could fit. Problem is, some wheels may stick out past the fender, or too far inside, which may not appeal to some. They technically fit, but would not be ideal. Also there are different wheel widths that could fit, but depending on the tire chosen may rub the inner fender up front. Hard to know which ones will work without trying them all. We do have a good idea of some aftermarket wheel and tire combos that will fit the Riv in this thread: https://rivperformance.editboard.com/t1080-faq-big-wheels-questionwill-they-fit_________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | al_roethlisberger Junkie
Name : Al Roethlisberger Age : 55 Location : Sanford, NC Joined : 2013-03-12 Post Count : 960 Merit : 24
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Thu May 02, 2013 9:00 pm | |
| - AA wrote:
- al_roethlisberger wrote:
Has anyone tried the 17" Buick LaCrosse wheels from 2007/2008? Wondering if the bolt patter and offset are compatible.
The listing I've seen says they are 5x115, but I see that some later LaCrosse wheels are 5x120.
Thanks Al
The Lacrosse bolt pattern is 5x120, though some incorrectly assume (and list) them to be 5x115. One of our members actually tried a set to find they wouldn't fit. I was checking the Tire Rack x-ref and it shows 5x115 for the 2007 through 2009 Lacrosse, but goes to 5x120 in 2010. A large wheel vendor on eBay also indicated the same. I wonder if the Lacrosse changed in 2010? The 2007/08 Lacrosse wheel is 17x6.5 with a 52mm offset and 70.3mm hub. If the pattern is 5x115, I wonder how well a 52mm offset will setup on the Riviera. Al | |
| | | AA Administrator
Name : Aaron Age : 46 Location : C-bus, Ohio Joined : 2007-01-13 Post Count : 18448 Merit : 251
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Thu May 02, 2013 9:15 pm | |
| I stand corrected, Al. I think you're right, the bolt pattern did change after 2008. I think you're safe trying 2007/2008 LaCrosse rims with 5x115.
2009-up looks like they're 5x120 (probably due to increased wheel sizes). _________________ '05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30 3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch^^^ SOLD ^^^ '70 Ninety-Eight Holiday Coupe 455cid • 116k miles^^^ SOLD ^^^ | |
| | | LARRY70GS Aficionado
Name : Larry Age : 67 Location : Oakland Gardens, NY Joined : 2007-01-23 Post Count : 2179 Merit : 149
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Fri May 03, 2013 8:07 am | |
| - al_roethlisberger wrote:
- AA wrote:
- al_roethlisberger wrote:
Has anyone tried the 17" Buick LaCrosse wheels from 2007/2008? Wondering if the bolt patter and offset are compatible.
The listing I've seen says they are 5x115, but I see that some later LaCrosse wheels are 5x120.
Thanks Al
The Lacrosse bolt pattern is 5x120, though some incorrectly assume (and list) them to be 5x115. One of our members actually tried a set to find they wouldn't fit. I was checking the Tire Rack x-ref and it shows 5x115 for the 2007 through 2009 Lacrosse, but goes to 5x120 in 2010.
A large wheel vendor on eBay also indicated the same. I wonder if the Lacrosse changed in 2010?
The 2007/08 Lacrosse wheel is 17x6.5 with a 52mm offset and 70.3mm hub. If the pattern is 5x115, I wonder how well a 52mm offset will setup on the Riviera.
Al
Al, Offset is pretty useless when talking about wheels. There is positive and negative offset. I really don't know why they even list it. Back spacing is much easier to understand and measure. Most of the Riviera wheels I see listed have a back spacing of 5.6" -6". Increasing positive offset increases back spacing. 10mm is less than half an inch. http://www.tirerack.com/wheels/results.jsp?autoMake=Buick&autoModel=Riviera&autoYear=1998&autoModClar= _________________ 98 Riviera SC3800 All stock except gutted air box. 1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ Best MPH, 116.06 MPH, Best ET, 11.54 https://www.youtube.com/watch?v=UHCda-t_Jls https://www.youtube.com/watch?v=sfT2tEO4XcU
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| | | al_roethlisberger Junkie
Name : Al Roethlisberger Age : 55 Location : Sanford, NC Joined : 2013-03-12 Post Count : 960 Merit : 24
| Subject: Re: FAQ: Wheel & Tire, Lug, Bolt Pattern, Offset, Center Bore Info Fri May 03, 2013 12:00 pm | |
| Thanks, of course the bottom line is that someone (perhaps me) will just have to try one to know for sure how it fits and looks. Thanks! Al
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