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SVT Shelby GT500
All you running wide tires are doing it wrong!!!!
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<blockquote data-quote="Corepuncher" data-source="post: 11088380" data-attributes="member: 125137"><p>I am fairly new to all this, and have a 2011 GT500. I got my car in July and was hooking great with the stock F1's (285's). Now that it has cooled from 100 to 70 every day, it's night and day. </p><p></p><p>I just bought a new set of rims (9" fronts, 10.5" rear) that came with KDW2's...255 front 285 rear. Stock was 9.5 all around and 265/285. </p><p></p><p>My initial impression was to get wider tires on back but now I'm not sure at all. </p><p></p><p>Just a quick poll...should I stay with 285's or go wider? Talking street here, not really track.</p><p></p><p>If a tire is wider I assume you will have more contact, but, weight per unit area would be decreased, and so would friction. A skinnier tire would have more force per unit area and therefore more "grab" wouldn't it? So doesn't it really boil down to how the tire grabs under weight? Imagine a tire the width of a bicycle tire (haha I know). Very small contact patch but the force per unit area would be immense. </p><p></p><p>No matter how wide the tire, those two wheels have to support the weight of the car, which does not change. So really I'm thinking it boils down to not width, but the compound used and it's ability to grip under pressure. So forget width and go for better material?</p><p></p><p>Material wise, do KDW's or F1's have better compounds as far as grabbing the road? And assuming neither are optimal, someone throw me out the to 1 or 2 daily driver but grippy brands. Thanks!</p></blockquote><p></p>
[QUOTE="Corepuncher, post: 11088380, member: 125137"] I am fairly new to all this, and have a 2011 GT500. I got my car in July and was hooking great with the stock F1's (285's). Now that it has cooled from 100 to 70 every day, it's night and day. I just bought a new set of rims (9" fronts, 10.5" rear) that came with KDW2's...255 front 285 rear. Stock was 9.5 all around and 265/285. My initial impression was to get wider tires on back but now I'm not sure at all. Just a quick poll...should I stay with 285's or go wider? Talking street here, not really track. If a tire is wider I assume you will have more contact, but, weight per unit area would be decreased, and so would friction. A skinnier tire would have more force per unit area and therefore more "grab" wouldn't it? So doesn't it really boil down to how the tire grabs under weight? Imagine a tire the width of a bicycle tire (haha I know). Very small contact patch but the force per unit area would be immense. No matter how wide the tire, those two wheels have to support the weight of the car, which does not change. So really I'm thinking it boils down to not width, but the compound used and it's ability to grip under pressure. So forget width and go for better material? Material wise, do KDW's or F1's have better compounds as far as grabbing the road? And assuming neither are optimal, someone throw me out the to 1 or 2 daily driver but grippy brands. Thanks! [/QUOTE]
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All you running wide tires are doing it wrong!!!!
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