Gerald G. McGeorge

If this YJ has longer shackles installed to allow the 31's then it's most
likely the front caster is off by a mile. If you want to leave the 31s then
it'll probably take shimming the front axle to get the caster back to the
5-7 degrees necessary.
"Jeepers" <moomesa@INVALIDfnbnet.net> wrote in message
news:moomesa-943209.20050515092003@corp.newsfeeds.com...
> My wife is the proud new owner of a 4-banger 93 Wrangler. It's in grood
> shape, was well cared for and garaged. It has a sailcloth top, nerf bars
> and 31" tires wrapped around some AR outlaws. It has some heavy duty
> looking shackles on it but no real lift.
>
> The tires say 50 psi. That seems a bit much for a lite Jeep. We didn't
> get any owners manual, but I was thinking somewhere around 35 psi, but...
>
> The thing drives kinda squirrelly. It's real touchy about steering.
> Which makes me think maybe, perhaps the tires should be inflated to a
> higher psi, but I'm not sure. Maybe it needs a front end alignment.
>
> Any thoughts? TIA
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
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Jeepers

In article <vmd9cphlaic07f@corp.supernews.com>,
"Gerald G. McGeorge" <gmcgeorge@frontier.net> wrote:

> If this YJ has longer shackles installed to allow the 31's then it's most
> likely the front caster is off by a mile. If you want to leave the 31s then
> it'll probably take shimming the front axle to get the caster back to the
> 5-7 degrees necessary.

The YJ requires a lift for 31s?


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Jeepers

In article <vmd9cphlaic07f@corp.supernews.com>,
"Gerald G. McGeorge" <gmcgeorge@frontier.net> wrote:

> If this YJ has longer shackles installed to allow the 31's then it's most
> likely the front caster is off by a mile. If you want to leave the 31s then
> it'll probably take shimming the front axle to get the caster back to the
> 5-7 degrees necessary.

The YJ requires a lift for 31s?


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mabar

32 lbs may still be a little high for a YJ with 31" tires. I have an '02 TJ
that came with 30" tires. Factory recommended pressure on the door sticker
is 29 lbs. for 30" tires. I now have 31" BFG AT tires and run 28 lbs. on
front and rear, which seems perfect for this size.

Tom

"Jeepers" <moomesa@INVALIDfnbnet.net> wrote in message
news:moomesa-604A52.21154615092003@corp.newsfeeds.com...
> In article <vmcrr65tj4didb@corp.supernews.com>,
> "Dana Rohleder" <boreal@charter.net> wrote:
>
> > Factory specs with 225/75SR15 tires are 30 psi front & rear. Typically,
LT
> > tires run with a higher pressure (starting around 35 psi), I think to
keep
> > the stiffer sidewalls cooler. I run 31/29 psi front/rear in my
235/75SR15's
> > and it seems to do well on the highway. As others noted, the psi rating
on
> > the tire is the MAX cold inflation pressure. If you go that high on a
jeep,
> > you may as well be using wagon wheels - it will be VERY squirrelly
indeed.
> > Typically, the lower the tire pressure, the more sluggish the handling
and
> > more body roll/sway. The higher you go, the tighter and more responsive
the
> > vehicle gets. You'll need to experiment - carefully!
> >
> > If you've never owned a short-wheelbase off-roader,
>
> Two CJs and a Cherokee. They both behaved well.
>
> > the highway handling
> > tendencies will, and should, scare the crap out of you - that's why they
> > call them off-road vehicles, and why the YJ has a roll bar(though they
are
> > loathe to use the term for obvious reasons). Every larger step in tire
size
> > and every inch of lift makes a Jeep less of a highway vehicle and more
> > squirrelly at speed. You'll get used to the twitchy steering, but you
need
> > to be very careful braking and steering in wet/slippery conditions. But
if
> > you are going to keep this ride height and these tires, you may want to
have
> > an alignment done. A poor alignment will make things pretty twitchy
also.
> > --
> > Dana Rohleder
> > Port Kent, NY
>
> Right now her tires are at 32 psi. AN alignment is scheduled.
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----

mabar

32 lbs may still be a little high for a YJ with 31" tires. I have an '02 TJ
that came with 30" tires. Factory recommended pressure on the door sticker
is 29 lbs. for 30" tires. I now have 31" BFG AT tires and run 28 lbs. on
front and rear, which seems perfect for this size.

Tom

"Jeepers" <moomesa@INVALIDfnbnet.net> wrote in message
news:moomesa-604A52.21154615092003@corp.newsfeeds.com...
> In article <vmcrr65tj4didb@corp.supernews.com>,
> "Dana Rohleder" <boreal@charter.net> wrote:
>
> > Factory specs with 225/75SR15 tires are 30 psi front & rear. Typically,
LT
> > tires run with a higher pressure (starting around 35 psi), I think to
keep
> > the stiffer sidewalls cooler. I run 31/29 psi front/rear in my
235/75SR15's
> > and it seems to do well on the highway. As others noted, the psi rating
on
> > the tire is the MAX cold inflation pressure. If you go that high on a
jeep,
> > you may as well be using wagon wheels - it will be VERY squirrelly
indeed.
> > Typically, the lower the tire pressure, the more sluggish the handling
and
> > more body roll/sway. The higher you go, the tighter and more responsive
the
> > vehicle gets. You'll need to experiment - carefully!
> >
> > If you've never owned a short-wheelbase off-roader,
>
> Two CJs and a Cherokee. They both behaved well.
>
> > the highway handling
> > tendencies will, and should, scare the crap out of you - that's why they
> > call them off-road vehicles, and why the YJ has a roll bar(though they
are
> > loathe to use the term for obvious reasons). Every larger step in tire
size
> > and every inch of lift makes a Jeep less of a highway vehicle and more
> > squirrelly at speed. You'll get used to the twitchy steering, but you
need
> > to be very careful braking and steering in wet/slippery conditions. But
if
> > you are going to keep this ride height and these tires, you may want to
have
> > an alignment done. A poor alignment will make things pretty twitchy
also.
> > --
> > Dana Rohleder
> > Port Kent, NY
>
> Right now her tires are at 32 psi. AN alignment is scheduled.
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----

Mike Romain

When I ran 31's on my CJ7, I ran 28 for the highway and 26 around town.

That mellows the handling out.

They also finally wore out with an even tread all across.

I would be all over the road at 35 psi, not to mention the kidney belt
needed to drive it with tires that hard.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepers wrote:
>
> My wife is the proud new owner of a 4-banger 93 Wrangler. It's in grood
> shape, was well cared for and garaged. It has a sailcloth top, nerf bars
> and 31" tires wrapped around some AR outlaws. It has some heavy duty
> looking shackles on it but no real lift.
>
> The tires say 50 psi. That seems a bit much for a lite Jeep. We didn't
> get any owners manual, but I was thinking somewhere around 35 psi, but...
>
> The thing drives kinda squirrelly. It's real touchy about steering.
> Which makes me think maybe, perhaps the tires should be inflated to a
> higher psi, but I'm not sure. Maybe it needs a front end alignment.
>
> Any thoughts? TIA
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----

Mike Romain

When I ran 31's on my CJ7, I ran 28 for the highway and 26 around town.

That mellows the handling out.

They also finally wore out with an even tread all across.

I would be all over the road at 35 psi, not to mention the kidney belt
needed to drive it with tires that hard.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Jeepers wrote:
>
> My wife is the proud new owner of a 4-banger 93 Wrangler. It's in grood
> shape, was well cared for and garaged. It has a sailcloth top, nerf bars
> and 31" tires wrapped around some AR outlaws. It has some heavy duty
> looking shackles on it but no real lift.
>
> The tires say 50 psi. That seems a bit much for a lite Jeep. We didn't
> get any owners manual, but I was thinking somewhere around 35 psi, but...
>
> The thing drives kinda squirrelly. It's real touchy about steering.
> Which makes me think maybe, perhaps the tires should be inflated to a
> higher psi, but I'm not sure. Maybe it needs a front end alignment.
>
> Any thoughts? TIA
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----

Mike Romain

Jeepers wrote:
>
> In article <GLt9b.56850$Qy4.12353@fed1read05>,
> "Jerry Bransford" <jerrypb@mecox.net> wrote:
>
> > How's your front-end alignment? Like toe-in? Has anyone installed a lift
> > on the Jeep that might have decreased the Caster angle below 5 degrees? A
> > quick front-end alignment will tell you. If the Caster angle is less than
> > about five degrees, that could cause "squirreliness". Toe-in should be 0
> > to -.15 degrees though .15 works best.
>
> Alignment will be checked tomorrow. No lift other than the shackles.
>


There you go....

You will likely need to add shims to the front axle to get the Caster
back.

Shackle lifts are the 'worst' thing to use, it knocks the front and rear
alignment all to crap. If the rear is off too much it will jut eat
u-joints...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Mike Romain

Jeepers wrote:
>
> In article <GLt9b.56850$Qy4.12353@fed1read05>,
> "Jerry Bransford" <jerrypb@mecox.net> wrote:
>
> > How's your front-end alignment? Like toe-in? Has anyone installed a lift
> > on the Jeep that might have decreased the Caster angle below 5 degrees? A
> > quick front-end alignment will tell you. If the Caster angle is less than
> > about five degrees, that could cause "squirreliness". Toe-in should be 0
> > to -.15 degrees though .15 works best.
>
> Alignment will be checked tomorrow. No lift other than the shackles.
>


There you go....

You will likely need to add shims to the front axle to get the Caster
back.

Shackle lifts are the 'worst' thing to use, it knocks the front and rear
alignment all to crap. If the rear is off too much it will jut eat
u-joints...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Mike Romain

Jeepers wrote:
>
> In article <vmd9cphlaic07f@corp.supernews.com>,
> "Gerald G. McGeorge" <gmcgeorge@frontier.net> wrote:
>
> > If this YJ has longer shackles installed to allow the 31's then it's most
> > likely the front caster is off by a mile. If you want to leave the 31s then
> > it'll probably take shimming the front axle to get the caster back to the
> > 5-7 degrees necessary.
>
> The YJ requires a lift for 31s?
>

Yup.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's