Posted by Traveler on May 20, 04 at 15:56:19:
In Reply to: Gear Ratio and Tire Wear Question posted by snoel on May 20, 04 at 13:37:23:
: How do I find out what gear ratio I'm running? I own a '99 3/4 7.4L GMC Sub.
Glove box codes
GU4~3.08
GU6~3.42
GT4~3.73
GT5~4.10
G80~ Eaton Locking Diff Case
: Also, I just purchased new tires from Les Schwab Tires. The Toyo Open Country A/T, 50,000 warranty, rated D. After just 500 miles, the front, outer shoulder of each tire is wearing, cupping and feathering. I had them align the truck when I bought the tires. They realigned it and gave it more/less? toe and camber, but within the spec range. This seems to have helpled, but I'm still getting the premature wearing. Any ideas?
Shot at 500 miles means a severe inflation or alignment problem. Normally you will need to rotate them every 5000 miles +- to stop cupping. I just do a F-R swap on same side.