I have a 2010 Silverado with factory 20's (Goodyears). I know they're going to ride rough, but I can feel every nook and cranny in the road along with small bumps I never even knew were there!! Has anyone replaced their factory tires with some that ride a little better? Would a softer shock help? The pavement has to be ultra smooth before my truck even hints around at having a good ride. Thanks in advance!!