Help with wheel and tire size with 2.5 lift - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ General Discussion Forum

Join Wrangler Forum Today


Like Tree1Likes
  • 1 Post By Jak_Rak
Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-14-2018, 05:15 PM
Thread Starter
  #1
Newb
 
Join Date: Jun 2018
Posts: 6
Help with wheel and tire size with 2.5 lift

I'm in the process of rebuilding my wife's 87 wrangler and I bought a BDS 2.5 lift new stock size body bushings and still not sure about tire and wheel sizes.

I was thinking to go 31-10.5 on a 15 by 8 wheel but after searching I saw some here say to go 33-12.50 on a 15 by 8 wheel, I guess I could get a 1/2 to 1 inch lift from a shackle for the bigger wheels. Her jeep is not a daily driver or anything, but it may be used as such if it snows or something. it needs to be able to cross ditches and look "cool" doing it I guess. I also can trim the rear wheel wells.
The jeep has stock gearing and lockers intalled and a recently rebuilt 4.2 with fuel injection(howel) and a 5 speed.
Any help/replies would be great.

Tim.T is offline   Quote
Old 06-14-2018, 05:48 PM   #2
Jeeper
 
UPStrades's Avatar
 
Join Date: Nov 2017
Location: El Paso TX
Posts: 378
If youre locked on that stock rear D35 then you Don't want to go with 33s. You'll break that axle in a heartbeat.

I have 33's under a 4" lift with an open D35 in the rear.

If you're wanting to keep it mild then I say 32s at most. Just think of where you want to be in the long run because more than likely you'll want to go bigger.

UPStrades is offline   Quote
Old 06-14-2018, 06:15 PM   #3
Jeeper
 
Jak_Rak's Avatar
 
Join Date: Jun 2017
Location: Lewis Co.
Posts: 158
Personally, I wouldn't run 33x12 on that lift, but that's me. I'd stick with the 31x10 on 8" wheels. If you absolutely had to have something bigger, go with a 32x11, max.

If you don't have the wheel/tire combo picked out yet, you could move up from 15s to 16s, which will give you more rubber selection in some "in-between" sizes.
Krangler87 likes this.
__________________

Gimme rectangle headlights and leaf springs!
'94 YJ, 4.0, AX-15, hardtop, full doors, original radio.
Jak_Rak is offline   Quote
Sponsored Links
Advertisement
 
Old 06-14-2018, 06:22 PM   #4
Jeeper
 
Gottagofast's Avatar
 
Join Date: May 2017
Posts: 7,846
2 1/2" lift is perfect for 31"s...
31's will be bad enough w stock gears... you certainly don't want bigger
You can run 31's on the stock wheels if you want to
My 33's w 4.5" lift regularly reshape my fenders
__________________
I come in peace.... I mean you no harm
Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
Gottagofast is offline   Quote
Old 06-14-2018, 06:25 PM   #5
Jeeper
 
UPStrades's Avatar
 
Join Date: Nov 2017
Location: El Paso TX
Posts: 378
Dirt Everyday put a set of 35s under a 2.5" OME lift....was pretty impressive. Again open diffs though.
UPStrades is offline   Quote
Old 06-14-2018, 06:49 PM   #6
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Luckymac's Avatar
 
Join Date: Jan 2014
Location: SouthEast of Denver
Posts: 9,027
For snow you're going to want a narrow tire (pizza cutters). I wouldn't go any taller than a 31" tire without a different rear axle (Explorer 8.8).
Ideally with the 31" tires you'll want 4cyl axles with 4:10 gearing.

The factory setup is a compromise (think....Jeeps are sold in Alaska and Mexico), they need to do OK in a wide variety of circumstances.
When we modify our Jeeps we have to consider the ultimate uses that we plan for our heaps. Hopefully they'll do better in our individual circumstances.

OP states he and his Mrs. might use the Jeep in the snow but doesn't state what other plans he has for it. With more information we can give more concise suggestions.

Good Luck, L.M.
__________________
"Wrangler....It's not just a vehicle, It's a lifestyle".
.................................................. ........................
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-190K Miles No back seat.
HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
Luckymac is online now   Quote
Old 06-14-2018, 07:49 PM   #7
Jeeper
 
Jak_Rak's Avatar
 
Join Date: Jun 2017
Location: Lewis Co.
Posts: 158
Quote:
Originally Posted by UPStrades View Post
Dirt Everyday put a set of 35s under a 2.5" OME lift....was pretty impressive. Again open diffs though.
They used a set of Spidertrax adapters/spacers to fit the Rugged Ridge JK bolt-pattern wheels on there and left those tires seriously outside the fender. I'm not sure what the OPs jurisdiction is like, but riding around the streets here like that would likely net you a ticket.


__________________

Gimme rectangle headlights and leaf springs!
'94 YJ, 4.0, AX-15, hardtop, full doors, original radio.
Jak_Rak is offline   Quote
Old 06-14-2018, 09:25 PM   #8
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Luckymac's Avatar
 
Join Date: Jan 2014
Location: SouthEast of Denver
Posts: 9,027
Quote:
Originally Posted by Jak_Rak View Post
I'm not sure what the OPs jurisdiction is like, but riding around the streets here like that would likely net you a ticket.
I've lived in Colorado for over 40 years and I've never heard of a law like that.
Is that statewide or just in Lewis CO? How certain are you?

Good Luck, L.M.
__________________
"Wrangler....It's not just a vehicle, It's a lifestyle".
.................................................. ........................
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-190K Miles No back seat.
HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
Luckymac is online now   Quote
Old 06-14-2018, 10:57 PM   #9
Jeeper
 
Jak_Rak's Avatar
 
Join Date: Jun 2017
Location: Lewis Co.
Posts: 158
Nope, not Lewis, CO. It's Lewis Co., Washington.

WA state law requires your tire to be covered by the fender in it's entirety, 100%, nothing sticking out. I'm not sure what goes on in Colorado, but here, the state patrol has been known to pursue certain equipment violations...vigorously.

Can't say I blame them, exactly. With as much rain as we get, spraying water from tires that stick out a few inches from the fender is a safety hazard (and a DB move, especially in traffic).
__________________

Gimme rectangle headlights and leaf springs!
'94 YJ, 4.0, AX-15, hardtop, full doors, original radio.
Jak_Rak is offline   Quote
Old 06-15-2018, 09:52 AM
Thread Starter
  #10
Newb
 
Join Date: Jun 2018
Posts: 6
Thanks for the replies, 31-10.5 it is! Also I had no idea that a locking differential was a bad thing in a stock jeep....I should have joined sooner!
Tim.T is offline   Quote
Old 06-15-2018, 10:14 AM   #11
Jeeper
 
Join Date: Dec 2017
Posts: 108
Quote:
Originally Posted by Tim.T View Post
Thanks for the replies, 31-10.5 it is! Also I had no idea that a locking differential was a bad thing in a stock jeep....I should have joined sooner!
I'm planning on going the 31x10.5 route too when I finally get time to install my OME 2.5" lift. Right now I have 30x9.5 on the stock wheels/suspension so going to see how I like that tire setup with the lift before buying tires. Please post pics when you get it finished would love to see this combo!
RioGrandeRandy is offline   Quote
Old 06-15-2018, 10:20 AM   #12
Jeeper
 
Join Date: Dec 2017
Posts: 108
Also I've noticed the 31x10.5" BFG All Terrains are often cheaper than the 30x9.5" anyone have a clue why? Supply and demand?
RioGrandeRandy is offline   Quote
Old 06-15-2018, 12:25 PM   #13
Jeeper
 
UPStrades's Avatar
 
Join Date: Nov 2017
Location: El Paso TX
Posts: 378
Probably because its the most common all terrain. Every tire store sells them, even Wal-Mart.
UPStrades is offline   Quote
Old 06-15-2018, 04:27 PM   #14
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Luckymac's Avatar
 
Join Date: Jan 2014
Location: SouthEast of Denver
Posts: 9,027
I have the 31X10.5X15 BFG KOs. The best price I found was Costco.
When I went to buy new tires for my F-150, again the best price was Costco. BUT....they don't take debit cards. Cash, Check or Credit card. As I remember, they wouldn't take my debit card. Discount tire matched Costco's price and I bought my tires there. YMMV.

Confirm what I state here. "From what I remember" (my memory isn't that good any more). I went to the Costco website but didn't find any reference to what type of payments they accept.

Good Luck, L.M.
__________________
"Wrangler....It's not just a vehicle, It's a lifestyle".
.................................................. ........................
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-190K Miles No back seat.
HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
Luckymac is online now   Quote
Old 06-22-2018, 03:55 PM   #15
Jeeper
 
dante2's Avatar
 
Join Date: Apr 2013
Location: Central Oklahoma
Posts: 289
This is a 2" lift with 31's from 3 years ago. I got about 4" initially due to sagging original springs. It's dropped maybe an 1" at the most. Luckymac has good advice, find some 4.10 axles to put under it you won't be disappointed.
Attached Thumbnails
Click image for larger version

Name:	IMG_20151021_184142_033.jpg
Views:	3
Size:	218.1 KB
ID:	4073410  
__________________
Her's
04 KJ 228K
Mine
94 YJ 4.0 AW4 2" Zone lift, 31's
Our's
03 KJ 220K 89 MJ 4.0 4wd auto
dante2 is offline   Quote
Old 07-05-2018, 08:45 AM
Thread Starter
  #16
Newb
 
Join Date: Jun 2018
Posts: 6
I do happen to have a 92 parts yj with the 2.5 4 cylinder that I could get the gears from, I ASSUME that the numerically higher rear gear will still fit on the 87 carrier? Once again thanks for all the help.
Tim.T is offline   Quote
Old 07-05-2018, 12:51 PM   #17
Jeeper
 
Gottagofast's Avatar
 
Join Date: May 2017
Posts: 7,846
No it won't but don't mess w gears... swap the whole axle assy...
__________________
I come in peace.... I mean you no harm
Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
Gottagofast is offline   Quote
Old 07-11-2018, 10:39 PM   #18
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Luckymac's Avatar
 
Join Date: Jan 2014
Location: SouthEast of Denver
Posts: 9,027
YES! Swap the entire axle assembly. Faster, easier and you won't have to set up the carrier.

If you go with other than stock wheels, you'll want 4" back spacing.

Good Luck, L.M.

__________________
"Wrangler....It's not just a vehicle, It's a lifestyle".
.................................................. ........................
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-190K Miles No back seat.
HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
Luckymac is online now   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 05:50 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.