04-12-2011, 07:04 AM
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#16 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: North East
Posts: 6,203
Drives: 09 370Z Sport M6
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Quote:
Originally Posted by Nismoracer
Read it, and it says you need more psi the faster you go. So using the max psi# on the side of the tire is ok. I wondered why the recomendations on cars is always lower than max psi on the sidewall. On bikes they tell you to inflate to max psi on the sidewall.
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You need more pressure at very high speed because as you go faster there is more heat generated in the sidewall, you need the extra pressure to reduce the heat generation from sidewall flex. In doing so you are also reducing the load capacity of the tire (after a certain point) and reducing the amount of grip available from the tire. The numbers I quoted give you maximum grip.
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