Just got the Readylift sst 4/3 kit(69-3495) for my 08 Yukon XL and been struggling with what tire size to buy for the new wheels I bought. I want the largest tire I can put on without an excessive amount of trimming. The wheels i have are Ultra 249 Predator 2 17x9 +1mm offset. I've been going crazy trying to decide what tire to mount on the wheels. The lift isn't on yet but am planning to install it next weekend and want to have everything ready to go before hand. Readylift says 33x12.5 no rubbing, I'm thinking 305/70. Going through the site it seems like I'm one of the few not going with 20s so its hard to get a good look at what others have already done and know what does and doesn't work. Any advice?