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SVT Shelby GT500
HELP!! TREAD width vs SECTION width on Cup 2s
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<blockquote data-quote="Catmonkey" data-source="post: 15521912" data-attributes="member: 124025"><p>Let me say this, I have never seen Michelin specify a tread width. Anything you get from TireRack is based on some other basis that's explained on their website, which to me is kind of hokey because it's based on a curved measurement. I'd take those measurements with a grain of salt. I'm running SVTPP wheels widened to 11". With the added width, they're at a +69mm offset. I run a 1/4" spacer which brings the offset to +63mm. I' have a 325/30-20 Michelin Sport Cup 2 mounted on the car now and the cross section is even with the outer fender. I've verified this with a straight edge. </p><p></p><p>Prior to the 325s, I was running a 315/35-20 on the same rim with a custom 8mm spacer. The 315's were 1" taller. Interestingly enough, both sets of tires measure 12.6" at the cross section mounted on the same 11" rim. The tread width is definitely wider on the 325s. I'm running a watts link which is less forgiving than the panhard. Using your specs overlayed with my specs, it seems to push your cross section only 2mm out further than mine. Unless your car is really low, I can't see them rubbing on the outer fender. </p><p></p><p>Here's how you can verify whether the fender can contact the tire. What I have done with mine, is to remove the rear springs and jack the axle up to where it's literally sitting on the bump stops. In doing so, you can see just how much clearance you have before any contact. It's not going to get any closer than what you see by doing this.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 15521912, member: 124025"] Let me say this, I have never seen Michelin specify a tread width. Anything you get from TireRack is based on some other basis that's explained on their website, which to me is kind of hokey because it's based on a curved measurement. I'd take those measurements with a grain of salt. I'm running SVTPP wheels widened to 11". With the added width, they're at a +69mm offset. I run a 1/4" spacer which brings the offset to +63mm. I' have a 325/30-20 Michelin Sport Cup 2 mounted on the car now and the cross section is even with the outer fender. I've verified this with a straight edge. Prior to the 325s, I was running a 315/35-20 on the same rim with a custom 8mm spacer. The 315's were 1" taller. Interestingly enough, both sets of tires measure 12.6" at the cross section mounted on the same 11" rim. The tread width is definitely wider on the 325s. I'm running a watts link which is less forgiving than the panhard. Using your specs overlayed with my specs, it seems to push your cross section only 2mm out further than mine. Unless your car is really low, I can't see them rubbing on the outer fender. Here's how you can verify whether the fender can contact the tire. What I have done with mine, is to remove the rear springs and jack the axle up to where it's literally sitting on the bump stops. In doing so, you can see just how much clearance you have before any contact. It's not going to get any closer than what you see by doing this. [/QUOTE]
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HELP!! TREAD width vs SECTION width on Cup 2s
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