I got a 6 spd 3:73 rear with 33x12.5's and I am glad I stuck with 33's as I have no plans of re-gearing. 6th is useable on the highway....however, any steep incline I am dropping down to 3rd or 4th to get some grunt up the hills at highway speeds. So, I could not imagine what the 35's would be like with the 3:73 around my neck of the woods and mountains.