Tire wear & rotating
Need to call on you guys for input....
Freightliner FLD120 - 115,000 miles on bushings
Yokohoma RY637 Steer tires with 60,490 miles total
Monroe gas shocks with 10,000 miles on them
3-axle laser alignment 40,000 miles ago
My steers were wearing real good. Last week with 58,000 miles on them I had the steers dismounted, flipped and remounted on the same wheel and spin balanced. Wheels were installed on the same side of the truck they came off of. Tires balanced RH=4oz and LH=8oz. We installed Centramatic balancers at this time also.
The tires have 2,200 miles on them since they were flipped. Seen the truck today and the driver showed me that the RH steer tire is wearing bad on the inside tread - about 3/4 way around it is wearing in a wave pattern, or cupping. If you run your hand around the tread you can feel the up and down, up and down, up and down. In about 3 spots the tread is nearly worn half way out - or twice as much as the rest of the tread. This is only on the inside edge of the RH tire - which used to be the outside edge since the tires were flipped on the wheels.
I did not notice any bad wear at all on the tires last week when the tire shop was flipping and balancing the tires. I feel that I may have made a mistake by not having the wheels rotated after the tires were flipped - as is, the tires are running backwards from what they were before (because they were flipped on the wheels and stayed on the same side). Had they been rotated as well, they'd be running the same direction as they were before. Am I right in thinking that running the tires "backwards" may have damaged a belt or caused the bad wear?
|