Hi RoyalF:

___ Start here … Tire Pressures

___Always fill cold (whatever the ambient is) and expect a 1 # increase for every 10 degree increase above ambient or straight tire heating due to the drive. Burst pressures of today’s tires are well over 100 #’s so unless you are really crazy, you won’t blow them out. In fact, over inflated tires produce far less heat then the same tire when under inflated. Longevity will improve tremendously. The 30,000 mile Bridgestone RE92’s when inflated per the Insight manual/door sticker last just about that amount of time. When inflated to 50 +, there are those that still have not replaced them and are well south of 100,000 miles now. The Corolla’s GY Integrity’s lost 5-6/32 over her first 30,000 miles at < 40 #’s and just 3-4/32 over last 40,000 miles at 50 – 52 #’s if that helps?

___To much? When I drove for the record distance on a single tank last June and repeated it back and forth to work last September, I jacked them up to 60 #’s and haven’t ever looked back.

___Increasing tire pressures improve FE, tire longevity, and turn in. What higher pressures hinder is stopping distances and ride comfort.

___An HCH’s minimum would be 50 #’s if you are looking to maximize your FE. If it were mine, I would be running 52 - 55 #’s myself.

___Good Luck

___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net