Hey all -
I am considering upgrading my stock set up 225/75/16 Goodyear Wranglers to the 33" Duratracs with 15" aluminum wheel setup that ESP had in his famous 41 page thread that is still going as we speak. I run the 3.73 gears. I had a few questions:
1.) The famous question: How many MPGS will I lose? I am confused as to the loss of MPG. I have seen it vary by a lot, but some are still getting 20MPG on the highway with this set up but it looks like most of these people are going from the 255/75/17 set up (31" tires) to the 33" set up as opposed to the 28" set up like myself. I am currently getting 18MPG with 70% City, 30% highway. Daggo66 said in one thread to expect to lose 2-5MPG but I've seen 1-2 other posters get 20MPG, with about 16MPG mixed. That doesn't appear to be consistent so I am thoroughly confused.
2.) Will I need to recalibrate my speedometer and is it more cost efficient to do so at the dealership?
3.) What is the minimum body lift/spacers I need to get to run these tires? 1"? I am trying to avoid getting these because they appear to cost a lot of money in terms of inital installation costs plus the marginal loss of MPG from being higher up in the air.
4.) Will I void my warranty from doing so?
Thanks for any responses! I am not a genius on Jeeps but I've done my fair share of reading the other threads on this.