tribulation138

how to make a even slow vehicle slower. put bigger tires on. i think most of us just deal with it.
thats why i have my sport bike for my fast days.

rays0852

I think there are laws in the UK and 35s may not even be an option for him.

I think you have to be within one + 1 metric size of the OEM tire.

JKUBryan

Tru dat!
Ducati for fast, JKU with 37's for chill.
It's a great combo!

Roryslife

In a year of reading multiple jeep forums: things I've never heard:

"My tires are too big, I think I'm going to go down a size"

v8zracer260z

I agree most people in the US have never driven a diesel Jeep so therefor will provide little help for you on this. That being said you are only going up less than a inch so that should not really be an issue. The weight of the tires is more significant by adding 20lbs per wheel of rotational mass and unsprung weight. I do think with almost 400 ft/lbs of torque available you will be fine and not notice a lot of difference in acceleration. You may notice a slightly bumpier ride due to the increased weight of the tires. I have two diesel trucks and they are a lot different than gas trucks I've had too. There is a lot more power at low rpms than in a gas vehicle.

2012JKNY

I'm really curious about this too, now. I've been reading this thread and wanted to ask opinions. I have a 2012 JK 2 door with the 6 speed manual and 3.6 Pentastar. It's a sport, so I have the 3.21 ratio and I was curious to see if anyone has run 35" tires on this setup with factory gears (315/70/17 duratracs)

Eventually I am definitely going to re-gear, but any thoughts for now??

Thanks!

jkd3624

What your going to find is a load of mixed reviews of people saying suck and people saying go for. That is what you will find. I am a person who went with a 3.8 and 3.21 and 6speed and sure I lost 4 hi and 6th gear. But at the time it is what I could afford so I did it. I never regretted it. It was fun wheeling. But. I will say once u do have the money to get gears it makes a huge difference and is nice. But I can understand doing tires before gears

2012JKNY

Thanks for the input! I ran 33" BFG T/As for a while which are pretty heavy 33s and didn't notice a big difference in performance, so I didn't think 35s would make a real big difference with the 3.6. Not saying that is going to change my mind about gears, definitely doing them!

Now I've heard the same about 6th gear, but did I read your post wrong in saying that you lost 4 hi?? Was that a typo or did I just misunderstand?

nosnhoj1

I have 25000 on my '12 JK with 35's and 3.21s. As long as you have the 3.6 it's not bad at all. You do lose 6th gear but its totally not worth the expense to regear in my opinion unless you spend a LOT of time crawling. I'm planning on giving 37's a try as soon as these wear out. I'll report back on how bad 3.21s are with those.

2012JKNY

Nosnhoj1, seems like you and I will have a pretty similar setup and are going back and forth on different threads! haha just noticed that. Thanks for your input! As far as I can tell, the 3.6 has plenty of power for me. Although I can only compare it to the boat anchor (though bombproof) 4.0 from my '05 TJ!