245/50 16 are stock, I have seen 255/50 16. What is the widest we can get in there. I think I would like 245's on the front and 255's on the rear. What do you think?

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1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 355CI, 2bolt, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, 3.73 Posi, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels, Every thing else is STOCK
Best Times:60ft 2.26 1/8th 9.68 @ 73.63 Hoosier Q/T
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you could probably fit wider than 255 on the rear. I'm going too next time, but my rear is 2" wider on both sides, so I can't tell you for sure.

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'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."

 

I'm thinking 255 is the most you want... after that it'll start to balloon at which point you defeat the purpose of going wider at least in terms of lateral handling. If you just want to go in a straight line, maybe 265's.

 

You want to stick with the original size unless you are determined to refigure everything. The factory tire is made specifically for the car it came on. The spring rate of the tire and compound and sidewall construction are particular to a certain vehicle weight and even the unsprung weight. Alot of times a tire change can hurt a car more than helping it.

 

I had 245/45/16 on my IROC. they're just a little lower profile. they make the rim and your car look better, lower your car about a quarter to a half inch, probably make it handle better, (it tightened my car's handling up alot, but i had pretty bad tires on to begin with.)