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In general, by stretching a sidewall, the tire becomes stiffer and transfers more energy directly to the spring and damper. Depending on the tire's design, this can either be a good or bad thing. On a street car, stretching a tire generally translates into a stiffer and harsher ride. On a race car with race tires, outside of having to retune the suspension, it could be a disastrous thing if the tire was not designed to be stretched. A slight stretch isn't going to hurt much, but stretching a tire into a rubber band probably isn't the wisest thing. A tire's sidewall construction typically only has two plies of polyester cord, whereas the tread section has multiple steel belts, nylon and/or polyester cap plies, sometimes even Kevlar plies, and, of course, at least 1/4 inch of rubber tread. The tread section has much more protection against nails, screws, and other crap sitting on the streets waiting to puncture your tire. Stretching the crap out of a tire will then expose the sidewalls to all of the junk on the road too. Then again, nobody said style was easy. Of course, whether you like the style or not is up to your personal preference. Read more: [ http://www.importtuner.com/tech/1401_january_2014_question_it/#ixzz323szTUDX ]
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