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however stretching a tire helps to increase the contact patch and increases the sidewall rigidity as well (which prevents the tread from rolling over, what I believe the main reason why raising tire pressure generally increases cornering grip), stretching also allows you to run a lower tire pressure and get a larger contact patch without compromising sidewall rigidity/cornering, there is really no benefit in running a bulged tire (besides the small gain in tire width which is almost negated since the shoulders bow up). As with almost anything else, there is extremes to everything to the point of diminishing returns, just like you can run too much camber, you can over-stretch a tire to the point that it becomes a safety issue, as well as sacrificing tire width with no additional gain in sidewall rigidity/cornering advantage. I admit this is all just my theory, feel free to flame me internet warriors!
____________________________________________________ "The dreaded 2nd windshiled wiper swipe when you turn it off its almost like tis showing you that it's boss, and it doesn't have to stop when you tell it to :("-College Boy (discussion on ptu relocation) "No good reason to put it there anyway. -Bernie (NoVA) False -vorpalZ False. -Bernie (NoVA) You're correct, there are 3 good reasons -vorpalZ False. -Bernie (NoVA) Wow, right again, just remembered another, make that 4 -vorpalZ" XD 
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