sfmurph4

this is helpful, thank you.

good idea on flipping the old. so you're saying if i replace for new tires i should get rotations more frequently than every 7500 miles?

This is my first post here, but I've read a lot of other good posts and topics so thought i would give it a go. I just bought a 2023 Sierra AT4 (upgrade from 2016 Sierra All-Terrain) and i've loved everything so far! I've got less than 6k miles on it and have recently been hearing a loud humming noise between 15-50 mph so i took it to the dealer. They tell me the tires are cupping and there is nothing they can do, which really pissed me off as this is a brand new truck with less than 6k miles. I've got Goodyear off-road tires and in the past I've had KO2's with no trouble. I read that cupping can be caused by misalignment or tire imbalance. A couple questions: 1. Can I push back and shouldn't this be covered by my bumper-to-bumper warranty since the misalign/imbalance is what caused the cupping? 2. If i really want to get rid of the noise should i replace all four tires? 3. If i replace, will i run into this again? thanks