Just picked up my 2022 Silverado 1500 with z71 package, came with 20in wheels but the highway ride sucks. Had tires balance checked and they are all good. Adjusted tire pressure to 35 on the rear and 31 in the front. Unless the road is perfectly smooth, it feels like the rear is a bit bouncy. I've been reading on how replacing the rear rancho shocks might help. I mainly do highway driving and no offroad. Any recommendations on shock replacement to smooth out the ride?