Originally Posted by Scrider424
Question for everybody. Has anybody had any irregular tire wear issues after changing to a wheel with different back spacing? I started feeling steering wheel wobble around like 55-65 mph around the same time as having new wheels put on. So I took them to get rebalanced thinking this was the problem. This did not fix the problem so I took it back again and they examined the tires and showed me that I had cupping along the inside edge of my left front tire and a little on the back right tire. Is this just a coincidence that it happened the same tire as mounting new wheels? Or is it most likely because of the wheels. They are summit racing wheels 15x7 3.75 bs. Any input is appreciated.
when you run a different offset or a different width wheel you run the risk of changing the "scrub radius" (look it up) in a way that can adversely effect tire wear.
This is because you're changing how the weight of the truck is supported by the tire and suspension geometry. From the factory the load is going to be concentrated on the middle of the tire, but when you start changing wheel and tires dimensions, it sometimes (not always) can screw up all of the work that the engineers did and move the load of the vehicle to the outside or inside of the tire instead of the middle.