Looking to replace my ‘16 Yukon Denali with a new Tahoe or Yukon. I tow a 6500lb trailer and while the levelling rear air shocks on the Denali‘S MRC do help I still get a 1-2 inches of rear squat while towing. This is not a big deal since it has a solid rear axle. But any significant squat _would_ be a big deal on an IRS vehicle. Wheels would camber in and likely toe in and tire wear on the inside shoulders could be a serious issue. I can’t think of any other vehicle that is rated to tow 8000lbs+ and that has IRS. What are experiences out there with tire wear and dynamic alignment while towing heavy on the 21+ trucks? Do you have to use helper air bags to keep it level? And yes, going with the air ride suspension is an option, I raised some questions on that separately on another post.