Whats the best/biggest tire size for stock 4.10's on an auto JK that would maximize fuel econ. and off road capabilities as well?

Im thinking 33's... but with a 2.5" lift, 33's might look to small?

 

no, tires from a bicycle will fit nicely....

 

I'm running 245/75r16 Goodyear Duratrac's. Honestly, I wouldn't go any bigger without performance mods or regear. My rig is a daily driver. And I like my OD.

 

33's on 2.5 will look fine! But you'll lose mpg. Count on 2-3 mpg from stock.

 

Well the rubi comes with 32's stock... so going to a 33 would cause problems with 4.10s?

 

I run 37s as a 50 a day daily driver with 4:10s currently and average 16. That is interstate with OD off and I do have a CAI and exhaust. It does drop in city to 14.

I think on a JKU with a lift and 33s they look small, but milage is better. IMO

In the spring, that is the axle and regear.

 

I run 4.10's and an auto with the Superchips Flashpaq. I run Mobil 1 and have a K&N filter. 87 octane tune and recalibrated for my 35's (34.25) and it runs just fine! I DO in fact have OD, I'm sure if I hit the highways in the Rockies I'd have to turn off OD, but it's not bad at all in TX hill country. 14-15 city 17-18 HWY, 19 on a good day....

 

I thing 33's about the limit on getting decent performance with the 4.10's. Any bigger and you can feel it. I run 35's with 4.10's and to me it is a dog. I guess everyone is different

 

I run 35s on my stock 4:10s and a superchip, I cruise at 80 mph no prob. I get a bit over 300 miles to a tank. It's my daily driver, and gets about 70 miles a day. No problems with speed, acceleration, anything like that. I love it.

 

Show off! I did Procal it to adjust for tire size. That at a minimum is a must.