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Old 07-01-2008, 01:39 PM   #65 (permalink)
MazdaMatt
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
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Quote:
Originally Posted by PaleMelanesian View Post
If you come off the highway sideways at speed, you'll blow a sidewall no matter what the inflation.

Also, the sidewall of my tires clearly says "44 psi COLD". They're designed for some expansion from warming up.
If you set your pressure to 44, you should be safe from dissaster, then. Feel free. My tires say 51psi. If i set them to 51 cold, i would be at major risk. You are drastically reducing your stopping and turning power (the whole point of inflating is to reduce friction) so good luck in your next emergency situation.

You are wrong about sidewalls always blowing out when coming off at highway speeds. Many of my friends have gone off the race track at MUCH higher than highways speeds with no issues. My fastest off-track was at 90km/h and I went sideways with no issues. I've watched people exit at 150km/h with their tires intact. None of these people would risk overinflating their tires to MAXIMUM rated sidewall pressure.
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