Tread pattern has a lot to do with what you want out of the tire , more off-road , more street manners , tire noise , terrain you will encounter ect ect ect . As far as size well that’s all debatable and dependent on the tire itself( not all tires of the same size are actually the same size , wheel offset and willingness to trim . I have 35s on my GMC Sierra with only 2” of lift but they fit with no lift because they are only 10.5” wide . This post will turn into a very long “ my setup is the best “ post so my best advice to you is get on some forums specific to your rig and do allllooooootttt of reading to weed out the good info .