2013 Billet Rubicon
Ace rock rails, 2.5 teraflex coil lift, AEV Geo brackets, Rancho 9000xl shocks all around, 35x12.5x15 Wrangler MTR's on Mb chaos wheels, Bushwacker flat flares, 12k winch on Rough Country hybrid bumper, Spyder rear bumper/carrier, KC long range windshield lights, rock lights and some other happy crap.
Does the "75" represent width of the tire? Is it 12.5?
No, Example: A 285x75Rx17 tire. The 285 is the section in millmeters (tread width) of the tire. The 75 means, that the sidewall height is 75% of the section width. The R means radial, and the 17 means a 17 inch wheel.........
The optimum set up would be running wheels with 4.5 Backspacing. Do you have to run spacers with stock wheels on this size tire, no. Just follow what jkjeeper06 recommended. There are several on the Forum, that are running 285x75rx16s, or 285x70rx17s with out any issues, (that they have reported), but they may rub slightly on tight turns, so just add the washers!!!!!!
Rye works well, providing you only use the seedless variety. The caraway can get wedged in between the threads and the rim. Over time the friction and shifting can cause the lugs to sheer off.
Personally, IMO, for extreme off roading, I find that Ciabatta Rolls works best, it has the firmness and durability that any serious off roader would appreciate. If you prep the roll by leaving it out for a few days so it becomes nice and firm, you'll get many, many years of enjoyment.
As one of the previous posters said, never use Marmalade, it's not hub centric! A good jam or jelly works very well, just try to steer clear of grape. It doesn't have the binding power you'll find in a strawberry or boysenberries.
If you need more information or specifics, just check out this link:
^^^I do mine at every 6,000 miles. In fact it is going into Discount Tire this week to have them rotated. I purchased the road hazard warranty from them when my wrangler was new, so from this point on, rotation, tire balance, and tire damage if any is on them, at their cost and time!
I always re-torque my wheels the following morning after they rotate them, just for safety!
I just don't like the idea of having to pull your wheels every approx. 3000 miles, to re-torque the spacers. Either run without them, or get new wheels with 4.5 backspacing makes more sense!
When I ran spacers, I did not pull them at 3k for checking. I just did the checking at the 6-7.5k tire rotation and had zero issues. I've run them on 2 different Jeeps for over 50k miles with nary a problem only checking at this interval. In fact, I just pulled them last week when I switched to AEV wheels and they were super tight because of the red Loctite. The impact definitely had to work to get them off the Jeep.
2013 JKU Sahara, Gecko Green, loaded up
10A Springs, Teraflex levling kit, 315/70/17 Duratracs, AEV Pintler wheels, front/rear bumpers and hood