35's with 3.21 Gears
#21
JK Junkie
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It does. It's called the "section width". And the second number, say "75", is the section height. That's a percentage value that means the section height is 75% of the section width. So, if a 225 and a 265 both have 75 as section heights, the 265 will be taller since 265x.75 is more than 225x.75.
Make sense?
Make sense?
#22
JK Jedi Master
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I know this has been talked about a lot on other threads but I have a question that I can't find the answer to. I have the 3.21 gears in my jeep and I know 35's will make it sluggish but I have almost no hills in my driving area. I do 65 on the interstate with my stock 32's and get 25-26MPG's. Knowing this how bad do you all think the 35's will hurt my interstate millage. I plan to regear in about a year.
I don't have a manual, so can't comment on what your mpg's will be with 35's, but i would be very surprised if it was above 17-18. And as mentioned, very few are posting mpg numbers as good as yours, so if mileage is that important to you, consider holding off on the tires until you can afford to gear as well.
#23
JK Enthusiast
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i have 3.21 gears and a 6 speed, 35" KM2's, its not that bad in the city,i have to gear back on the highway for hills. have run this set up for a little over a year now. getting 12mpg tho.
#24
JK Super Freak
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Also keep in mind that with 35's you will be putting a lot more weight to the unsprung portion of your suspension. Even if you regear to be able to gain back some acceleration, you will always be spinning those big meats around and will lose fuel economy as a result.
#25
JK Freak
Also as someone mentioned the cheap route to go is if you already have a GPS use it to check your speed and distance traveled and compare that to what your JK is reading to get an approximate correction factor. Hopefully it will keep you from getting a speeding ticket too!
#26
JK Freak
Thread Starter
Just drove back from work 60miles and reset my MPG reader and in 6th gear at 65MPH I get 25 MPG easy sometimes 26. In the city I get around 19-21. I drive pretty easy but not like a granny. I try to shift around 2100-2200 to keep the RPM's down. Does anyone have an idea why I am getting such good MPG's. It is super flat on the interstate I drive on.
#27
JK Enthusiast
I'm in the same boat as you, I average about 21 mpg with 6 spd and 3.21 gears. I've got a set of 35's about to go on soon as well. I'm hoping for around 18 with the 35's.
#29
JK Enthusiast
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Originally Posted by JKAdam
I'm in the same boat as you, I average about 21 mpg with 6 spd and 3.21 gears. I've got a set of 35's about to go on soon as well. I'm hoping for around 18 with the 35's.
#30
JK Freak
Thread Starter
Originally Posted by JKAdam
I'm in the same boat as you, I average about 21 mpg with 6 spd and 3.21 gears. I've got a set of 35's about to go on soon as well. I'm hoping for around 18 with the 35's.