I really like the looks and positive reviews of the nitto trail grapplers. Only real compliant I have heard is their weight. I know different gearing would be better, but would I have much issue with running a 315/70R17 D rated trail grappler on my '13 jku with 3.73 factory gearing?

I know MPG would go down, but would it be really bad and how about highway driving?

 

I'm running cepek fun country I believe 63 lbs a tire. With 3.73 it's tolerable but I
Have 4.56 waiting to be installed

 

Geez, you haven't picked a tire yet?? I don't have the TG's, but I have the Duratrac's. With 3.73 these are fine, but they are 61lbs as opposed to 79lbs I believe for the TG's. That is going to be a huge jump up. I would think a re-gear is necessary. Living in Dallas, highway driving is fine with my DT's, but minor hills start to cause it to down shift. Go with a lighter tire or do a re-gear with the TG's, but I would drive with them first to see if your driving style makes them suitable. I drive mostly city so the 3.73's are sufficient and I get 14mpg (worse if I do mostly why driving).

 

I've got the 35x15.5x17 tg on my 13 Sahara with 3.73 and it's not bad at all. I will eventually go with 4.56 but so far been running this way for over a year with out concern. Done some pretty hairy offroading and put in 27k in a 15 months. Average mpg is 14-15. Lowest I've seen is 10 mpg towing a full trailer 400 miles in a 30 mile per hour head wind at 60-65 mph. Also the same with 8 hours offroad. Best I've seen is 19.1 mpg following other jeepers at 60-65 mph to a trail

 

Yea I know.....I'm being very indecisive on tires. My other option is the fierce attitude. It would be lighter and less aggressive for my daily driving but a little more aggressive than the duratracs for my off-road use. They seem to get good reviews.

 

I love my DT's. I will say the TG's run a little bigger than my DT's. What made my decision to stick with DT's is they are great in rain and are quiet.

 

Only downside to
The dt is that they have very weak sidewalks if your playing in rock I wouldn't recommend take a look at dick cepek fun country brand new tire good in everything