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Old 12-21-2009, 11:12 PM   #80 (permalink)
orange4boy
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Join Date: Aug 2008
Location: The Wet Coast, Kanuckistan.
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The Golden Egg - '93 Toyota Previa DX
90 day: 31.91 mpg (US)

Chewie - '03 Toyota Prius
90 day: 57 mpg (US)

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Quote:
If you don't believe tire pressure is a impact, and that lower is sometimes better than higher
Of course it makes a difference. I just think it's not as big an issue with traction as some alarmist people think in the case of a passenger car on a typical road.

I like your stories about the clay track but I'm sure it a lot has to do with experience. I bet the old guy could still smoke the college kids if they swapped cars.

Also, it depends on the load of the tire. If your car is very light in the rear then you should probably run lower pressures there. My van is mid engine so running pretty equal front to back works well and for me the higher pressure has meant better handling all round. But that's just my butt dyno. Not a reliable source of data.

It would be nice to have a load and pressure graph to guide us although the mfg placard is still a good guide for the front to back difference.
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