Originally Posted by jeff4mcclintic
Hey all, this summer iím plannin on getting the bf goodrich mud terrain km2 35s.. Is there anyone runnin on tires like these or like these and what gears are you guys using.. also, how are they runnin?
I have a 2011 sahara, with automatic transmission. After a couple of weeks, I put on a 4.5" BDS short arm kit with 35" BFG KM2's...
I have read multiple threads about the sound of the BFG's being as quiet as the stock tires... thats absurd. They are much louder... it is not unacceptable, but not close to the stock 18" Bridgestone Duellers.
I personally like the sound. It hums, but my wife (who is opening up to Jeep life) does not complain like I figured she would.
I am running stock 373 gears, and due to the negativity that I have read about regearing, I purposfully drove it to Chicago (150+ miles) on a business trip last week, and noticed that it is a dog on long upgrade hills out on the highway (I am thinking that a AEV procomp is on my wishlist for the near future to get the transmission shifts fixed?)
However my daily commute is less than 10 miles to work on back roads, and I really do not notice much of a difference. (not near as bad as I expected!)
I keep an eye on the rpm gauge, and before the wheel swap I tried to keep it under 2k. I have noticed that it is a little tougher to do now after the swap. It doesnt go much over 2k, but it is not as fun to drive if I conciously try to keep the rpms under 2k.
It is a little doggy, but not terrible. I am only trying to keep an eye on the rpm gauge because I am trying to get a good idea of real gas milage.
I do not normally even tally gas milage, however I am reading that the milage gets much worse with a tire swap to 35's.
Having said that, my milage is in the 15+ range with stock tires, and 13+ after the swap.
Before the swap, I was really worried about the re-gear that everyone seems to promote on the forum, however it is not near as bad as it sounds. It will take years to repay for a regear with 1-3 mpg less?
They do look good, and overall I am happy with the choice.