18" low profile tires do not wear out faster than any other size tire. The reason that alot of people think that low profile tires wear out faster is because, typically low profile tires offer significantly more performance, so they are driven harder on a regular basis. They offer better traction and cornering which gives most drivers more confidence to drive hard.
Hope this helps,
Luke
800-428-8355 ext. 362

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Luke Pavlick
Performance Specialist (ASE Certified Master Tech)
The Tire Rack
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