I would like know the actual height of the GY Duratracs 315/75/16 mounted and installed on a JK, not the height the tire calculator gives you of (34.6").

Thanks guys

 

Dont have the Duratracs, but with the full weight of the JK unlimited and 30lbs PSI inflated on the Goodyears MT/R Kevlar, it measured in at 33.75". That's what I entered on my Superchips FP and my MPH reading on the speedometer is dead on with my GPS...

 

Thanks for the reply. I'm hoping they measure close to at least 34"

 

According to the Duratrac thread, they measure almost exactly 34" when mounted

https://www.jk-forum.com/forums/show...=1#post1803802

 

here are my 315/70/17's with 26-27 psi. not sure if they will be the exact same, but should be very similar....

 

Mounted, and at 30 psi mine came in at exactly 34.25 inchs.

 

whoa that doesnt even look like it reached 34"?? I cant tell from the pic, what does the 315/70/17 measure out to ?

 

33.5-34" seems to be fairly typical for 35's. A lot depends on the pressure you run, which model you have, measured on front or rear tire, rim width, where specifically on the tire you measure from, how much extra weight from hard tops/armor/bumpers/winches - whatever else.

There are a lot of variables leading to two of the exact same tire having different heights...

 

yeah, it is right at 33.5". I am running 26-27 psi. 17x9 wheel. Lod Front mid, Lod Rear full with tire carrier and warn m8000 winch. I measured the front from the ground to the top of the tire. no top at the moment.

 

The height to the top of the tire doesn't mean much as that isn't the rolling diameter. Measure from the road to the center of the hub and multiply by 2. That is the rolling diameter that the drive train deals with and what the speedo looks at. My 305X70R17 MTRs (34.1") @ 28#s measures 16"s up to the hub. I flashed 32"s into the computer and the speedo is on with the GPS and with a measured and a timed distance on the interstate. I'm guessing that a 315X70R17 (34.8") at 28#s would measure 16.4" to the hub, which makes it a 32.8" rolling diameter. If you stop to think about it, there is no way the tires performance can be any bigger than twice the distance up to the hub.