I have a 2021 SX Nightfall. It now has 5000 miles. When the Telluride has been sitting in the garage all night and then i get it on the road the next morning and start to drive it down the road, it has a noticeable bounce. After driving for awhile it smooths out. I took it back to the dealer and ask them if it was because of the 20 inch tires getting flat spots from sitting and then after they warm up, it gets smooth again. They acted like it was the first time they had ever heard such a thing , which surprised me. I expected them to say it was typical of the 20 inch tires. They balanced all 4 tires and said they were a little off. It drove beautiful on the way home, but the bouncing returned the next morning. I tried to blame the road, but it has been freshly paved and it has done it on different roads anyway. My question is, has anyone else been having this same bouncing problem in their Telluride with the 20 inch wheels? I would love to replace the 20 inch tires with 18’s, just to see the difference. I’m hoping it’s not a drive shaft problem, but then that would not go away..