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UFO · 05-20-2011, 07:40 PM

rocket man, if you would read the thread on the mythbuster's tire test, your mileage gains are minimal past a certain inflation. And you are running your tires seriously over-inflated; it's very risky to keep them inflated that much over the maximum rated pressure.

It's not the same a bicycle tire. Bicycle tires are rated for 120psi because they have very little area to pressurize, unlike a car tire. The maximum sidewall pressure is there for a reason.

My VW tires are rated for 44 psi, running at 40 psi.
I have two vehicles with LT tires rated for 80 psi, running at 42 psi.

My truck placard recommends 29 front, 35 rear. Similar for the other vehicles I think, I don't pay it much attention.

05-20-2011, 07:40 PM	#77 (permalink)
UFO Master EcoModder Join Date: Sep 2010 Location: Denver, CO Posts: 1,300 Colorado - '17 Chevrolet Colorado 4x4 LT 90 day: 23.07 mpg (US) Thanks: 315 Thanked 179 Times in 138 Posts	rocket man, if you would read the thread on the mythbuster's tire test, your mileage gains are minimal past a certain inflation. And you are running your tires seriously over-inflated; it's very risky to keep them inflated that much over the maximum rated pressure. It's not the same a bicycle tire. Bicycle tires are rated for 120psi because they have very little area to pressurize, unlike a car tire. The maximum sidewall pressure is there for a reason. My VW tires are rated for 44 psi, running at 40 psi. I have two vehicles with LT tires rated for 80 psi, running at 42 psi. My truck placard recommends 29 front, 35 rear. Similar for the other vehicles I think, I don't pay it much attention. __________________ I'm not coasting, I'm shifting slowly.