GM front ends don't eat them until you start making crazy lift modifications. I currently have a 2011 Sierra with 132k and I am looking for new tires sooner rather than later. According to the receipts, these Michelins were put on at 38k miles when the previous owner installed a leveling kit. They are finally getting down on tread, but still no dry-cracks. The previous owner must have been a nut about caring for it. My wife's GMC Acadia had factory tires until 112k when she found some leftover metal construction debris in the road and blew two out.