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  #1  
Old June 22nd, 2007, 09:27
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RAVC1 RAVC1 is offline
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Increasing Ground Clearance w/Tire Size

All,

Please understand I'm only trying to increase my ground clearance. I do not want a lift kit at this time. This may mean I need to increase the length of my bump stops.

I'm going to install 32x11.50R15 or 33x12.50R15 soon along with the Bushwacker pocket flares.

Q1) Do either of these tire sizes require gear changes from the stock ratios for the ring & pinion?

Q2) I have not taken measurements of my wheel well to estimate the wheel offset I am likely to need to prevent from rubbing when I make sharp turns. Does anyone already know this?

Q3) I would prefer a steel wheel as they are more flexible so they give a better ride. The Rock Crawler steel wheels 4WheelDrive Hardware sells look okay but I think the offset is too small.

Q4) I would prefer to find a set of wheels that possess the offset I need. However, this may not be possible. Wheel spacers I've seen are limited to just over 1". Is anyone using a thicker spacer than this? I would also think I can have a local machine shop fabricate these for me and they would be much less expensive.

Sound advise & experience is welcome.

Thanks,

Rick
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  #2  
Old June 22nd, 2007, 10:12
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rpraterxj rpraterxj is offline
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Re: Increasing Ground Clearance w/Tire Size

Hi Rick,

Be prepared for some folks to flame this thread. All of your questions are answered somewhere on this site, you must do several searches and read lots of threads.

If you are not putting at least a budget lift, 31" will rub like crazy at stock hieght. 32 & 33 will require that you pretty much have to cut almost all of your fender out. I have never seen a stock Jeep with 32 or 33 inch tires.

32 & 33 inch tires can be ran on stock gears, but performance and gas mileage will suffer.

As for wheels, it really depends on what tire you decide on. Most folks are runnning 15" rims, with 16" becoming more popular. Backspacing also depends on your tire choice and future lift plans. I think the most common is 3.75 or 4 inches of backspacing.

You can get a great deal on Soft 8's at http://www.quadratec.com/categories/jeep_wheels/

I highly recommend you do ALOT of research BEFORE buying anything. Seek out other members here that are local to you and get thier advice and help.

Good luck!
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  #3  
Old June 22nd, 2007, 10:16
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boomhauer boomhauer is offline
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Re: Increasing Ground Clearance w/Tire Size

Since you mention you want ground clearance, i'm assuming you are wanting to wheel it. If you put either of those sizes on a stock height rig, You will have NO flex unless you hack the living sh!t out of your XJ.
Careful how far you stick those wheels out. Legal and extra stress on your shafts and joints etc.
Gear changes would be nice.
Rusty's fenders look great as seen on Xtreme4X4 on the JeepSpeed project. The BW's look sh!tty imo.

You may want to give us some background on your rig, whats been done, what are your goals etc. IMO from what i've read without knowing exactly what you are planning to do in the end, i think you are going about this the wrong way. Don't take offence, as none is intended.
HTH -B
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  #4  
Old June 22nd, 2007, 10:17
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WrenchMonkey WrenchMonkey is offline
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Re: Increasing Ground Clearance w/Tire Size

Yeah, what rprater said.

But I will add that this:


Quote:
Originally Posted by RAVC1
Q3) I would prefer a steel wheel as they are more flexible so they give a better ride...
...sounds pretty insane to me.

Robert
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  #5  
Old June 22nd, 2007, 10:23
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Re: Increasing Ground Clearance w/Tire Size

first offi must remind you that you are driving a cherokee not a YJ or TJ... we have unibodies thus the trimming issue to fit larger tires can only be achieved to a certin extent... sure on the front you can just take off the fender, but in the rear unless you are willing to do alot of extra fab work, it can only be trimmed up to the pinch seam.Question is it a 2 door or 4door xj?? if its a 4door another clearence issue will be found at the front of the rear wheel well were cutting is also limited due to the DOOR being in the way... but on to your questions and my answers...

Q1) I ran compleatly stock with 31's on 3.55 gears for around a year i wish i had just spent the money and switched out the gears to start to help with the gas milage...

Q2)not sure on the offset you would need but its gonna be rediculous w/o a lift... again on the stock jeep and trimmed to the gills i had 4.5 BS and still rubbed the 31's slightly at full stuff when loaded down with gear..might as well just buy some full widths if you seriously wanna run stock suspension and 32/33's cus they are NOT going to fit!

Q3 and Q4) Rock Crawlers are available in various BS.. but again nothing will give you enough clearence away from the rear wheel well.. and wheel spacers wont either you would need 3.5 inchers or so in spacer as well as nicely backspaced wheels to get around the body(or as previously mentioned run full widths)

SO.........
SOLUTION 1)Buy a yj or tj

SOLUTION 2) throw a bastard back in the rear and some ford f150 springs(cheepest 4-5" lift you can find along with a Slip yoke from a yj, your front driveshaft in the rear and yj brake lines.. prob. cost around 150-200 total for everything..)

SOLUTION3)save your money and do things right the first time get LA's build the rear SYE ect... and then get the flex and clearence you need for 32/33's

SOLUTION 4)quit going places that you shouldnt in a stock XJ w/ 30/31's i went plenty of places stock ya i couldnt run with the big boys but the clearence you will achieve w/ 32/33's is pointless if there is ZERO flex!

so in short the answer to your question is NO, yes its slightly possible but NO you wont like it and YES you will regret it

BY THE WAY thats just my 2 cents (whatever its worth)
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  #6  
Old June 22nd, 2007, 10:28
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mjma mjma is offline
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Re: Increasing Ground Clearance w/Tire Size

talk to ryan at cheapxj.com. He's all about big tire with no lift.
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  #7  
Old June 22nd, 2007, 14:55
max419 max419 is offline
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Re: Increasing Ground Clearance w/Tire Size

I agree, i used quite a few of his writeups and desert metals, and am getting away with 33x12.50 on my 88 limited, im gonna put the grand cherokee LCA's up front,( for extra turning radius, w/o rub) Im cutting the hell out of the front fenders and the rear past the pinch welds, banging them up and reinforcing with extra sheet metal inside, riveted than later welded. It can be done just takes some pondering and ingenuity.
I am ending up putting a 2inch bilstein lift on, but that is just for some more travel.
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  #8  
Old June 22nd, 2007, 20:50
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RAVC1 RAVC1 is offline
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Re: Increasing Ground Clearance w/Tire Size

I searched for cheapxj.com but the url is gone from the www. I did find a cheapxj at jeepin.com.

Do either of you have contact information for Ryan you can send me.

Don't get me wrong I'd take a Old Man Emu 2" lift in a minute. The problem is my wife is a petite 5'2" and my mom (nursing home resident) is 4'11". Now I ask you, "How the hell is my mother, who is suffering from progressive dementia, going to be able to deal with a suspension lift on my 1989 or 1997 XJ when I visit and take her to lunch or dinner?" This is why I said no lift at this time.

Moreover, there is a difference between ground clearance and suspension travel. I'm after more ground clearance not necessarily suspension travel.

BW or Rusty's flares do not really matter to me; the quality of the product does.

Thanks,

Rick
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  #9  
Old June 22nd, 2007, 21:22
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WrenchMonkey WrenchMonkey is offline
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Re: Increasing Ground Clearance w/Tire Size

Quote:
Originally Posted by RAVC1
"How the hell is my mother, who is suffering from progressive dementia, going to be able to deal with a suspension lift on my 1989 or 1997 XJ when I visit and take her to lunch or dinner?"
Bring a stepstool.

Robert
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  #10  
Old June 22nd, 2007, 21:26
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Re: Increasing Ground Clearance w/Tire Size

I am curious why you are looking for more ground clearance and not suspension travel? You can pretty safely stick 30" on a stock XJ and only have ocasional rubbing. if all you plan to do is go down dirt roads then that seems like a better idea than paying a ton of money for larger tires that will only become a huge issue for you.
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  #11  
Old June 22nd, 2007, 22:02
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cklaus cklaus is offline
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Re: Increasing Ground Clearance w/Tire Size

if you gain a few inches in ground clearance because of the sidewall from a bigger tire, you are STILL raising the height of the jeep and its floorboard and seats... thus its still harder for you wife and mom to get into the XJ ( i know not as much as a lift+the tires... but still getting higher). this may be of more assistance. http://www.naxja.org/forum/showthread.php?t=921481

another thing to consider is the current state of your suspension. you may wanna measure and make sure its not sagging already as this is definatly working against you.
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  #12  
Old June 22nd, 2007, 22:21
John90XJ John90XJ is offline
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Re: Increasing Ground Clearance w/Tire Size

You're not going to gain enough of anything you want without raising the vehicle height so my thought is you invest in skid plates and rock rails and call it good.

Option 2 is buy a car and build your Jeep however you really want it.

Any amount of research on this site is going to reveal that you can't have ground clearance without bigger tires and you can't run bigger tires without creating space for them via suspension lift or dramatic trimming.

It just is what it is.
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  #13  
Old June 22nd, 2007, 23:01
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WrenchMonkey WrenchMonkey is offline
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Re: Increasing Ground Clearance w/Tire Size

I still like my stepstool idea. 3" and 33s should raise the doorsill, what, six inches? The 5-2 wife could handle that easily. And for the once a month mom-date, grab a rubber footed aluminum stepstool.

No point in sacrificing the rig for a once in a while need, especially if there's an easy workaround...

Robert
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  #14  
Old June 22nd, 2007, 23:09
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DirtyMJ DirtyMJ is offline
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Re: Increasing Ground Clearance w/Tire Size

For all the guys that are saying otherwise, you can trim and make them fit...





(no, you can't trim it like that and leave it.)
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  #15  
Old June 22nd, 2007, 23:20
John90XJ John90XJ is offline
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Re: Increasing Ground Clearance w/Tire Size

Quote:
Originally Posted by DirtyMJ
For all the guys that are saying otherwise, you can trim and make them fit...





(no, you can't trim it like that and leave it.)
If I was his 4'11" mother, I wouldn't want to be caught dead in something like that.
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