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Unread 09-10-2014, 01:13 PM   #1
Mitch72
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Need a bigger tire please

Hello all,

I need to upgrade my brother's 2013 wrangler (4 doors) tires to a bigger ones without lifting his wrangler. what is the maximum tires size that he can install without lifting his wrangler?

stock tires

245/75 R17 after I convert it -----> 31.5 x 9.7 R17

Also, do I need to regear or other modification?


many thanks

p.s I did the same thing to my 2001 tj, and love it.

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Unread 09-10-2014, 01:16 PM   #2
rirrgang
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Check Tirerack.com. They have a tire calculator for plus sizes
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Unread 09-10-2014, 01:19 PM   #3
HappyTrails
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The largest a JK/JKU can accommodate w/o a lift is 35".
I wouldn't take it off-road like that however.

If it is strictly for street looks, install a 2" spacer lift and be done with it.
I hear the 3.6L does not need a regear until you get over 35" tires.
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Unread 09-10-2014, 01:29 PM   #4
Mitch72
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Quote:
Originally Posted by HappyTrails View Post
The largest a JK/JKU can accommodate w/o a lift is 35".
I wouldn't take it off-road like that however.

If it is strictly for street looks, install a 2" spacer lift and be done with it.
I hear the 3.6L does not need a regear until you get over 35" tires.

thanks

He gonna use it for mild off road,..
so, he better install 35" on 17" rims ?
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Unread 09-10-2014, 01:30 PM   #5
HappyTrails
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That's what I'd do, 35" tires, 17" wheels.
If just mild off-road, just go with the 2" spacer lift and call it a day.
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Unread 09-10-2014, 07:58 PM   #6
Jodyblip
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35s with no lift is gonna look not good
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Unread 09-10-2014, 10:36 PM   #7
Kdailey13
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In my opinion, if you have no plans to alter the suspension at all, i would go with 33s. Fills up the wheel well and gives the jeep some legs, but still gives you enough travel and capability to do what you would like on a mild off road trail. As far as tires goes i recommend a set of 33x12.5 goodyear duratracs or mt/r with kevlar. With that tire size and a 4.5" back spacing on your rims it will give you a stanced look without rubbing. Keep the thread updated, love to see what you decide to do. I hope i helped out at least a little bit.
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Unread 09-11-2014, 07:12 AM   #8
JIMBOX
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You don't "NEED" to do anything-


Quote:
Originally Posted by Mitch72 View Post
Hello all,

I need to upgrade my brother's 2013 wrangler (4 doors) tires to a bigger ones without lifting his wrangler. what is the maximum tires size that he can install without lifting his wrangler?

stock tires

245/75 R17 after I convert it -----> 31.5 x 9.7 R17

Also, do I need to regear or other modification?


many thanks

p.s I did the same thing to my 2001 tj, and love it.
Have your brother join the Forum-

If/when he has questions--he'll ask

JIMBO
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Unread 09-11-2014, 08:23 AM   #9
VTJay
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Quote:
Originally Posted by Jodyblip View Post
35s with no lift is gonna look not good
Your opinion, I have 35's with no lift and trimmed fenders and love the look.
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Unread 09-11-2014, 08:29 AM   #10
JIMBOX
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Curiosity-


Quote:
Originally Posted by VTJay View Post
Your opinion, I have 35's with no lift and trimmed fenders and love the look.
Do you get "rubbing"/interference/hit fenders-got any pics??


Do you takeit off-road??

Do you have spacers??

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Unread 09-11-2014, 08:36 AM   #11
duneslider
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I am curious about some of this too.

I bought my 33's originally while I was waiting for my lift to arrive and on road the 33's caused no issues or rubbing. Offroad the back tires hit the flares pretty good and the fronts when stuffed and turned rubbed the flares and I wasn't disconnected. I suspect if I had disconnected the front the tires would have ripped the fenders off.

35's with 2.5 bump stops in the front still rubs the stock fenders pretty good.

Now, trimmed fenders gains several inches but I would think 35's would still get pretty close?
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Unread 09-11-2014, 10:00 AM   #12
fastfreddie
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315 Duratracs measure numerically at 34.4". Real world measurements on my JK, using 8.5" rims w/ 4.63", sit at 33.5"

If wheeling without a lift and only mild flexing, I would rip the stock rear fenders right off. IDK what would've happened with the front fenders but the air dam definitely got hit on flat ground when turning.

With stock wheels, you may be able to stuff this size tire inside the stock fenders but clearance for hard parts may not be adequate.

This little berm taken at an angle, not straight on as in the pic, ripped half my rear fender off...no lift.
img_0835.jpg  
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Unread 09-12-2014, 06:50 AM   #13
Mitch72
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Quote:
Originally Posted by Kdailey13 View Post
In my opinion, if you have no plans to alter the suspension at all, i would go with 33s. Fills up the wheel well and gives the jeep some legs, but still gives you enough travel and capability to do what you would like on a mild off road trail. As far as tires goes i recommend a set of 33x12.5 goodyear duratracs or mt/r with kevlar. With that tire size and a 4.5" back spacing on your rims it will give you a stanced look without rubbing. Keep the thread updated, love to see what you decide to do. I hope i helped out at least a little bit.
Thanks Kdailey for the info...
then 33s would be more suitable because no rubbing.
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Unread 09-12-2014, 06:52 AM   #14
Mitch72
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Quote:
Originally Posted by JIMBOX View Post
You don't "NEED" to do anything-




Have your brother join the Forum-

If/when he has questions--he'll ask

JIMBO

I will advise him to do so.

Thanks
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Unread 09-12-2014, 07:11 AM   #15
JIMBOX
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Thanx


Quote:
Originally Posted by Mitch72 View Post
I will advise him to do so.

Thanks
I'm notta curmudgeon, but I've seen "second hand" info screw things up too many times-

If he follows your info--then more questions will popup and he/we could really benefit if he joined our forum=

Good day

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