sdvivian

That tire is too wide for the stock wheels and the UCA's in the sst kit. You have to stay below a 11.5 in order to not rub. A lot of people with the 18's are going 285/75/18 for a true 35 that is only like 11.3 wide in order to not rub. Id assume that the factory 20's with the same offset would still need to be under that 11.5 As for readylift saying to not use 4auto its because of how the system engages when in that mode that can put extra stress on the front diff in sort of a jolting fashion. This is made worse with the lift when you don't drop the pumpkin like the larger kits will almost all do. They aren't saying you cant use it they are saying it increases the risk of damage due to how it operates