Whats the max tire size i can mount on my 92 RS with 85-87 iroc rims at stock height? thanks

 

I've heard of people going as wide as 265 or 275, but they had problems rubbing the inner fenders in the front. I'm not sure that wider is better for tires. If you go too wide the wheel can't support it and the tire will flex too much causing the contact patch to "squirm" and then you lose traction. It's really only for looks, not much performance gain.

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'89 Red Formula 350- 350 .060 over forged pistons 232* @ .020 cam Performer RPM Holley 750 DP Vortec 1.94 1.50 Accel Coil and dist. Hedman shorty headers Dual Exhaust w/ cutouts 1LE WS6 suspension, wheels, and brakes, 9 Bolt 3.27 Posi Edelbrock LCA's & Track bar subframe connectors 700R4 Harwood snorkel scoop Eclipse Head Unit Delco Bose Speakers 2 12" Pioneer subs w/ 400 watt/chanel amp

 

My 245/50/16 slightly rub the plastic inner fenders in the front while making sharp turns on my 87 T/A. My car is also lowered if that would make a difference.

 

On a thirdgen that was not originally equipped with p245 50 R16 tires, you may find some rubbing at full lock in the front. On the IROCs and Z28s with 16" wheels, the steering box did not allow the wheels to turn as far as on the 15" cars. I don't know about the RS camaros with 16" wheels so I'm not even going to guess.

On my IROC I've got Dunlap p255 50 ZR16 tires on the front as well as Jamex lowering springs and I do not rub at all.

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Well my car came factory with the 16" rims on 235 55 r16's...right now i have 245 50 r16 and i got room..i've been told i can go 275 in the back and 255 in front but 245 better for front....guy at sears auto center said i could fit 305's but working at Sears i know the kinda people the hire