when i got my car it had 275's with 18x9.5" wheels all the way around, but that was before I put the twin turbo kit on. i had to sell the wheels after i put the kit on because they rubbed the turbo downpipes. currently i have stock 97 cobra wheels on it with 235's up front and 245's in the rear, but these wheels are in ROUGH shape, my mechanic had them just layin around outside his shop for a long time and he said i could use them for free. So thats the issue, the tires end up rubbin the downpipes. i even think if i turn the wheel ALL the way in either direction now that they actually make contact with the downpipes.
HP twin turbo - 691hp/608tq with 15lbs huffed in (old setup)
comin soon...ON3 turbo kit, PTE7175