Modified XJ Cherokee Tech XJ (84-01)
All modified tech questions. If it modifies your XJ beyond stock parts ask it here.
Sponsored by:
Sponsored by:

Ride comparison: 30/9.50R15 vs. 215/75R15

Thread Tools
 
Search this Thread
 
Old Feb 10, 2013 | 03:01 PM
  #1  
BlueRidgeMark's Avatar
Thread Starter
CF Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 7,965
Likes: 964
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Default Ride comparison: 30/9.50R15 vs. 215/75R15

Bleh. I've been searching this topic for WEEKS! I give up searching, and I'm posting the question.

I've seen plenty of posts (here and elsewhere) that tell me I can run the 30/9.50R15s on my stock 94 Cherokee without modifying the fenders or lifting the vehicle. I'm NOT going to do either one.

After reading many, many tire reviews, what I have decided on is the Treadwright 30/9.50R15 PUMA with their Kedge Grip compound.

It's a DD, with light off-road, and needs to be good in snow and ice. My commute takes me over the mountains.

I'm currently running 215/75R15 on stock steel wheels.

What kind of ride difference can I expect between 215/75R15 and 30/9.50R15?

I like to corner, and I'm concerned mainly about sidewall flex.

Anybody made a similar transition? Can you tell me how the handling changed?

Last edited by BlueRidgeMark; Feb 10, 2013 at 05:09 PM.
Reply
Old Feb 10, 2013 | 04:32 PM
  #2  
ccooper1234's Avatar
CF Veteran
 
Joined: Oct 2011
Posts: 1,812
Likes: 0
From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
Default

I have some bfg long trail t/a 30/9.50/15 with half tread. It rubbed like crazy. So trimmed the fenders
Reply
Old Feb 10, 2013 | 05:08 PM
  #3  
BlueRidgeMark's Avatar
Thread Starter
CF Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 7,965
Likes: 964
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Default

Where did it rub?
Reply
Old Feb 10, 2013 | 05:19 PM
  #4  
Dan91's Avatar
CF Veteran
 
Joined: Sep 2009
Posts: 1,295
Likes: 0
From: Williston, North Dakota
Year: 1999
Model: Cherokee
Engine: 4.0L
Default

I ran 30x9.5x15 Dick Cepek mud tires with a shot sagging suspension. My flares were all removed though. I got a bit of rubbing in the front wheel wells. The rears were fine.
Reply
Old Feb 10, 2013 | 05:41 PM
  #5  
kirknd4spd's Avatar
CF Veteran
 
Joined: May 2012
Posts: 1,064
Likes: 0
Model: Cherokee
Default

Just something to think of, Treadwrights seem to measure a little taller than most new tires. My 235/75R15 Treadwrights measure as tall as the new 30x9.5s on my uncles truck. My roommate's 31x10.5 Treadwright Guard Dogs measure as tall as the 33's on my old Chevy (although I have BFGs on it, and they came up shorter than most 33's too).
My 235s fit fine on my XJ until I put them on some 15x8s with 3.75" backspacing, then they rubbed. And when I ditched the sway bars, I had to attack the sheetmetal with a cutoff wheel, and still need to trim a little more up front.

Just something to keep in mind if you dont want to lift or trim.

As far as ride and handling, as long as the air pressure is right and the tires are balanced, you wont have any issues. Not big enough of a difference from stock to make much of a difference at all, especially if you dont lift it.
Reply
Old Feb 10, 2013 | 05:41 PM
  #6  
ccooper1234's Avatar
CF Veteran
 
Joined: Oct 2011
Posts: 1,812
Likes: 0
From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
Default

Originally Posted by BlueRidgeMark
Where did it rub?
They rubbed on the rear. I had the rear flares removed and the the metal kept cutting the tire so I cut and folded the rear. That was also on sagging springs
Reply
Old Feb 10, 2013 | 05:58 PM
  #7  
BlueRidgeMark's Avatar
Thread Starter
CF Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 7,965
Likes: 964
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Default

Hmmm. Sounds like 30x95s are going to be marginal, or in the case of the taller Treadwrights, not work at all, and I tow frequently, so I guess I need to try plan B.

I was going for that size because it's the smallest tire TW offers.

*sigh*

I really like what I've read about the Treadwrights, but can't afford to be wrong on this. I'm pretty sure they won't refund my money if I order 4 tires and then say, "Oh, wait, they don't fit."

Looking for a good tire that will FIT with no rubbing, and will do decently in snow & ice. And not much over the hundred buck price point.

Suggestions?
Reply
Old Feb 10, 2013 | 06:37 PM
  #8  
ccooper1234's Avatar
CF Veteran
 
Joined: Oct 2011
Posts: 1,812
Likes: 0
From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
Default

I don't know how good this tire model is but 235's will be fine, I had 235 wrangles on mine and the didn't rub.
https://www.treadwright.com/p-22-235-75r15-atg-c.aspx
Reply
Old Feb 10, 2013 | 07:53 PM
  #9  
xjboy14's Avatar
Senior Member
 
Joined: Jun 2012
Posts: 524
Likes: 1
From: PA
Year: 1998
Model: Cherokee
Engine: 4.0L I6 Power Tech Engine
Default

Time for a 1-2" budget boost?

Originally Posted by kirknd4spd
My 235s fit fine on my XJ until I put them on some 15x8s with 3.75" backspacing, then they rubbed. And when I ditched the sway bars, I had to attack the sheetmetal with a cutoff wheel, and still need to trim a little more up front.
So if you rubbed with 15x8's 3.75 bs, does this mean im going to rub 31x10.5 15x8's with 4" backspacing?
Reply
Old Feb 10, 2013 | 07:56 PM
  #10  
rzldzl's Avatar
Senior Member
 
Joined: Dec 2012
Posts: 606
Likes: 20
From: cariboo, bc
Model: Cherokee
Default

235/75r15 were the biggest i went before lift.

no troubles
Reply
Old Feb 10, 2013 | 08:18 PM
  #11  
BlueRidgeMark's Avatar
Thread Starter
CF Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 7,965
Likes: 964
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by ccooper1234
I don't know how good this tire model is but 235's will be fine, I had 235 wrangles on mine and the didn't rub.
https://www.treadwright.com/p-22-235-75r15-atg-c.aspx

Yes, but they don't make them, apparently. 6-8 week lead time, IF they can get them, call for details.

I would already have ordered them, otherwise! I've seen plenty of comments like yours stating that 235s work fine. But they seem to be made of Unobtanium, at least in the Treadwright world.


Also, see the comment above about Treadwright's being taller than most.
Reply
Old Feb 11, 2013 | 06:07 AM
  #12  
crdude's Avatar
Seasoned Member
 
Joined: Sep 2012
Posts: 327
Likes: 0
From: Big Lake, Alaska
Year: 1991
Model: Cherokee
Engine: 4.0 ho
Default

Iv run 30x9.5 bfg's sense I got my xj. On stock rims there was no rubbing in the rear, fronts rubbed on my sway bar at full lock.

Removed my flairs and Bought a set of offset steelies (I don't remember the BS) and another set of 30x9.5 bfg's, no rub in the front but rubbed like crazy in the rear. I had to trim/fold. Probably wouldn't have been so bad if my leafs didn't have a neg. arch to them.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ROCKRIDGE 4WD
Vendor Showcase
6
Jul 13, 2016 12:11 PM
Urlaub
Introductions
7
May 16, 2016 11:01 AM
DynoGuy
Jeep Builds
52
Apr 26, 2016 04:55 AM
Cherokeegirl89
South Central
1
Apr 18, 2016 07:40 PM
redrooster
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
Oct 2, 2015 12:35 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 01:17 AM.