My wife’s 2021 Z71 Suburban wore the front outer shoulders very quickly on the OEM Goodyears. The tires have been religiously maintained at the recommended 35 psi and rotations every 7,500 miles. This was the first model year for this generation and it does have air suspension as well. I’m wondering if this vehicle just needs a bit more air in the front tires. I’ve bumped to 38 up front now and it’s going to get new tires before winter, but I’d like them to last longer than 27,000 miles. She’s not a hot rodder by any stretch.