I ran my OEM tires for about 48,000 miles at between 40 - 44 psi and they wore perfectly even and I got more miles out of them then most people I have talked to at yourcobalt.com and cobaltuniverse.net
I believe the tire lifts the front and back of it's tread patch more then it's left and right sides.
There are still safety issues with a reduced contact patch and braking though.
I see a test coming up.
Jack up the front of a car, put some washable paint on the bottom of the tire then lower it onto a piece of paper.
Try that at 15 psi, 30 psi, 45 psi and measure the difference in contact patches.
Would be a solid way to see what changes.
I'm working 12 days strait without a day off and about 55 hours a week so no chance I'll have time to try this anytime soon but if somone else wants to give it a go they are more then welcome.
__________________
Lifetime mpg
2012 mpg
|