unfortunately it is unrepairable. a patch/plug normally only works when placed on a flat surface, which is the tread area. all tire shops have a rule (probably a formal law too) prohibiting the repair or any tire hole outside and including the last block of tread.
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