Making 325/50/15's fit 02 SS
11-11-2009, 03:26 PM
#41
I didn't really do **** but bolt my 325s on. I use 15x10 7.50" Weldstar Wheels (stock rear-end length) so I didn't have to grind my brakes or use spacers. Then I just gave my inner fenderwells a couple taps with a rubber mallet, tossed them on and was good to go. Took me about 4 minutes to get 325s to fit my car. Still have bumpstops, and havn't rolled my fenders. Stock springs minus Isolators.
Wow I have a T/A and had to cut my bumpstops, cut my rear bumper cover, beat the hell out of the inner fenders and it's still close in some spots. You are lucky.
11-11-2009, 10:35 PM
#43
A 275 tire can handle a ton of power. For those of you who need a 325 to hook, or are even spinning that, you need to stop and first address your suspension. Don't use that 325 as a band aid.
The suspension to control that tire is just as important as the tire itself. With out one, the other isn't doing you any good.
11-11-2009, 11:53 PM
#45
I swapped from the 255/50-16 on stock wheels to the 325/50-15 on prostars and the results were baffling. My car, which was a 6 speed at the time, hooked okay on the 255 but wouldn't hook at all on the 325. This was with a UMI tunnel mount torque arm. BMR lowers, BMR panhard, BMR drag sway bar, and Strange SA shocks all around. I could not even slip the clutch and walk the 325 out the hole, it was like driving on ice. I went with the 28x10.5S and they worked great.
If you need to run a radial my vote is for the 275. In my case the narrower tire worked better, so I don't see any advantage in the 325.
I had to cut my bumpstops off, roll the fender lips, and do alot of beating on my TransAm to clear the 325. This was with stock springs with the stock insulators in place. When I went to the 28" slick I had to adjust the rear end forward and cut some of the rear bumper for clearance. The 28" slick is a good bit taller than the 28" radial and it grows under acceleration.
If you need to run a radial my vote is for the 275. In my case the narrower tire worked better, so I don't see any advantage in the 325.
I had to cut my bumpstops off, roll the fender lips, and do alot of beating on my TransAm to clear the 325. This was with stock springs with the stock insulators in place. When I went to the 28" slick I had to adjust the rear end forward and cut some of the rear bumper for clearance. The 28" slick is a good bit taller than the 28" radial and it grows under acceleration.
11-12-2009, 04:46 AM
#46
I am currently running a 275/50/15 MT Radial, for that little 26' DR i have it working quite well. On a 10' wheels you get a FULL patch for that tire. Thinking of going with a 28' next trip, and possibly a Hoosier DR since the sidewall is a lil softer.
