I have a 2015 Rubicon Unlimited with the factory C range BFG m/t's. Next week I'll be installing my lift and putting on new 315/70/r17 tires on my factory rims with spacers. I was just about set on the Cooper STT Pro's which are an E class, but I cam across at $65 less per tire...the mastercraft MXT - D class that is fairly comparable....especially for the savings when buying 5 tires. (I can buy 5 for the price of 4 STT pros)

Is this actually an easy decision as I shouldn't change to E class tires? I always thought of E class as a big truck tire, not for small trucks and jeeps?
Just trying to figure out if I am leaving money on the table by getting the STT pro's, especially since I expect to put very little mileage on the jeep and plan to move to 37's in a 2-3 years (likely wont wear out tires prior to that as I dont think I will put on more than 7-10k a year)

thoughts? advice?

 

I currently have E rated tires and the next set will be D. My main reason is when I air down the E doesn't squat much and in think that

 

Oops, as I was saying the E doesn't squat much and when I'm in the dunes I wonder if that holds me back a little. So my next tire will be a D rated tire.

 

I would highly suggest going to a name brand "d" rated tire. Nitto, bfg, Goodyear, cooper, Toyo, etc

No need to run e on our jeeps. You'll get a harsher ride, they're heavy, and won't squish and conform when aired down as already mentioned

 

I run C rated 15x33 Duratracs. The ride is much smoother than the 18" E rated Duratracs I had previously. Another note - I have had punctures in the E rated tires but not the C rated tires. Doesn't prove anything - just my experience.

 

I called my tire shop and he was shocked it came with E. He said to check the door for the rating for a minimum. I figured it would be rated for with what was on there...but looks like the sticker says "C", so now I am really starting to lean towards saving the $325 dollars and get the mastercraft mxt's....but dang the stt pro's look cool, and probably more durable. Hard to decide being that I am hoping to go to 37's as soon as I can budget the money to start modding the axles (gears, etc)

 

So I spend weeks planning...and then when I am about to make the purchase...I realize that I can get Nitto trail grappler M/t for same price as the Cooper STT PRo, but it will be a D tire and I think it will be slightly wider per manufacture specs. I like the looks of the STT Pro better though, I guess I cant go wrong with either, but the Nitto might be a smoother ride.....and has proven itself...whereas the STT Pro is still new. (but also that means more rare to see out right now).

First world problems......

 

Right. The E-rating sidewalls are way too hard for Jeeps, on & off road, not to mention the stiffer ride.

 

The factory Rubicon BFG's have always been load range C. Did they change in 2015?

 

HOly crap....Im blind.....err...I mean....this was a test and you were the only to pass. Yes, you are correct, the factory are C tires.
So basically, E will be ALOT stiffer....hmmmm.