91BLOWNBIRD
Registered User
so I tried my rear 275/35/18s on the front of my 91 SC with late model spindles and cobra anni calipers...it cleared everything...gets pretty close to sway bar and spindle arm, but clears.
I am going for rubber this weekend 275/40/17's in the back and 235/40's up front.
Yeah you prob want to keep at least the same diameters front to back
That are the same diameter unless i mistaken, 275/40/17 and 235/40/17
width/sidewall/wheel size
Only difference is the rears are wider, these are also the sizes on the car right now.
Side wall numbers are expressed as a percentage of tire width, not a fixed dimension like 40mm. So 40% of 235 is not going to be the same as 40% of 275. Here's a calculator that converts tire sizes into diameter and other measurements.
http://www.1010tires.com/TireSizeCalculator.asp?action=submit
David
the shop should have confirmed that with you...sounds like the just want your money...tire shops I've been to have always wanted to clarify aftermarket tire sizes
yeah that wouldn't suprise me at all...But the mistake was mine, I gave the size to the shop after glancing at the tires. then I went and looked when I got home today, they are actually 235/45/17's on the front.
according to the Tire Size Calculator, the overall diameter of the 275/40 is 25.66in, and the OD of the 235/40 is 24.40", and the 235/45 is 25.32"
So my question is what will the 1.2" in diameter cause any issues?