On 2010-03-09 13:28, John Sessoms wrote:
I have a very limited sample size on which to base a judgment, but after one year's experience with nitro-fill in the tires, it appears to work at least as far as the tires not bleeding down.
I've never had a problem with my air-filled tires bleeding down on the street cars. I adjust the pressure four times a year for the seasons and that's all they need. Three months later, the pressure is the same as I adjusted it to, within a pound or two out of 30. Even the 55psi/85psi tires on the pickup truck don't need much more than that.
On the race cars is a different matter, in part because those tires generally have /much/ thinner sidewalls than street tires. On the racecars, most people use nitrogen more for volumetric consistency across temperature (it's a lot drier than ambient air) as due to any leakdown issues ... you don't generally leave race tires alone long enough for leakdown to be a problem.
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