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Originally Posted by 986chris
? are new shaved tires better than old tires with same tread depth. i'm thinking mostly of side wall performance.
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The reason for shaving a tire is to reduce heat build up and tread squirm. Sidewall flex is not affected by shaving a tire or not. Now, another thing to consider in an example
1) you run brand "X" all last track season.. lets say you subjected it to 40 heat cycles.
2) you get brand new set of brand "X" tires, shaved.
Which is better? Well, it is possible that brand "X" has "heat cycled" out of its useful period even though it still has useable tread. If this is the case, then the newer tire will provide better grip, simply because it hasn't been heat cycled as much.
Oh, and as someone asked before, 245s are too wide for a 7" rim. if you already have an 8-8.5" front rim (or maybe all around) 245s would fit fine. Plus you could balance out the wear by rotating tires front/rear, left/right.