Thread: Tires question
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Old 04-16-2009, 09:32 PM   #4 (permalink)
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I would always be hesitant to go over the rated max pressure. Lots of people here do it, but you have to ask one very important question, is it worth it?

Yeah lots of people on here bump 50 psi and get great mileage. But unless you have the exact same set of tires that you stole from their car there are no guarantees they will be the same.

Industrial produced goods have quality control but there are alot of factors that can cause serious problems in the high pressure, temperature range for rubber and valves. The max rating is what they suspect is safe even if something goes wrong. i.e. your tire has a section of rubber that has a different composition and wears fast and can't take pressure. At 41 PSI their tests of intentionally poorly made tires deflated slowly rather than bursting or deflating rapidly, wore out and then burst. Setting to the max still allows for the engineers to incorporate a safety factor. Higher than that and there are no promises, also your insurance company has the ability to not cover you if you are injured in some form of accident relating to the tire malfunctioning and you wrecking.
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