I need some advice. After having a crack on my 21 ubertine, I’m going to just downsize my wheels. It seems this is a common problem for the 21. I have decided to go with liquid metal smoke (anyone heard of them) 20 inch and the tire size 265/40/20 square set up. Any advice, comments or suggestions? Do I need to buy new tpms? Discount tires is doing the switch for me. Also have used 3 ubertines if anyone wants to buy