First Time Buying After Market Wheels

[Cory S]

While not technically incorrect, your assumptions here are broken by the actual math.You're assuming that the difference between a 255 and a 325 is going to throw the weight off so drastically that despite it's extra tread pattern the tire will actually grip less. In reality there is plenty of weight to go around and the wider tire is able to utilize the larger surface are just fine.

Let’s hope so. I’ve always had an equal or better straight line grip with a 255-285 on my last 10 Mustangs, than 305-315’s gave me.

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[mavisky]

I will agree that my 275 RT-615K's on my 95 mustang had less traction than my 315 Sumitomo HTR-Z's, but that's a compound issue, not a sizing issue.