The Commish

Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
it now. This jeep is used only a little offroad, mostly up at the cottage
(and so I can get to it in the winter!) I haven't touched the suspension
yet. I decided on a set of Bridgestones, but when I called
a few tire shops to get prices, a sales guy told me that he wouldn't
recommend the 30's because they are considered a "truck" tire as opposed to
the 235 which aren't I guess, and therefore have a thicker ply and need more
air, which will make the ride in the YJ too stiff and unbearable. I had
never heard
this before, but it seems to make sense. Is this true? I had set aside the
extra $$ to get the 30's and now I don't know if I should. What do you
think?
Also I was told there would be no rubbing, but that still worries me a
little...

thanks
Jimmy

JimG

Hi Jimmy,

Any tire that is not OEM size or has a more aggressive tread design can
change ride characteristics. I am not familiar with Bridgestone's, but I
can't imagine that they would make a YJ ride any more ruff. You should be
able to clear 30's no problem.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R


"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside
the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy
>
>

JimG

Hi Jimmy,

Any tire that is not OEM size or has a more aggressive tread design can
change ride characteristics. I am not familiar with Bridgestone's, but I
can't imagine that they would make a YJ ride any more ruff. You should be
able to clear 30's no problem.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R


"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside
the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy
>
>

JimG

Hi Jimmy,

Any tire that is not OEM size or has a more aggressive tread design can
change ride characteristics. I am not familiar with Bridgestone's, but I
can't imagine that they would make a YJ ride any more ruff. You should be
able to clear 30's no problem.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R


"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside
the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy
>
>

Mike Romain

The truck tires usually have stronger sidewalls but they don't need
'more' air, usually less air than a passenger car tire.

Now they for sure can 'take' more air than a car tire usually, but you
want a good footprint on the ground.

I run my BFG 33x9.5 mud's at around 26 psi city and 28 psi highway. Our
Cherokee needs 32 psi with 235's on.

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

The Commish wrote:
>
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed to
> the 235 which aren't I guess, and therefore have a thicker ply and need more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy

Mike Romain

The truck tires usually have stronger sidewalls but they don't need
'more' air, usually less air than a passenger car tire.

Now they for sure can 'take' more air than a car tire usually, but you
want a good footprint on the ground.

I run my BFG 33x9.5 mud's at around 26 psi city and 28 psi highway. Our
Cherokee needs 32 psi with 235's on.

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

The Commish wrote:
>
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed to
> the 235 which aren't I guess, and therefore have a thicker ply and need more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy

Mike Romain

The truck tires usually have stronger sidewalls but they don't need
'more' air, usually less air than a passenger car tire.

Now they for sure can 'take' more air than a car tire usually, but you
want a good footprint on the ground.

I run my BFG 33x9.5 mud's at around 26 psi city and 28 psi highway. Our
Cherokee needs 32 psi with 235's on.

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

The Commish wrote:
>
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed to
> the 235 which aren't I guess, and therefore have a thicker ply and need more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true? I had set aside the
> extra $$ to get the 30's and now I don't know if I should. What do you
> think?
> Also I was told there would be no rubbing, but that still worries me a
> little...
>
> thanks
> Jimmy

Jeff Strickland

"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true?

No. Not "no" exactly, Hell No.

First, the 235s you are looking at can be either passenger car tires, or
Light Truck (LT) tires.
Second, 25 psi is 25 psi.
Third, if yuo get somewhere where the tires are too hard and are
compromising the traction, you can let the air out to between 10 and 15 psi,
and probably get enough additional traction to move on down the trail. You
can drive like this to a gas station to refill the tires, but you will be
perfectly safe at trail speeds. (You will experience a squishy and numbness
in the steering response, so the trip to the gas station for more air should
be kept to speeds below about 30.)
Fourth, you are really going to get 30x9.50s. You can also consider
31x10.50s, but from what you have said, I think the 30s are better suited to
what you plan on doing.

Jeff Strickland

"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true?

No. Not "no" exactly, Hell No.

First, the 235s you are looking at can be either passenger car tires, or
Light Truck (LT) tires.
Second, 25 psi is 25 psi.
Third, if yuo get somewhere where the tires are too hard and are
compromising the traction, you can let the air out to between 10 and 15 psi,
and probably get enough additional traction to move on down the trail. You
can drive like this to a gas station to refill the tires, but you will be
perfectly safe at trail speeds. (You will experience a squishy and numbness
in the steering response, so the trip to the gas station for more air should
be kept to speeds below about 30.)
Fourth, you are really going to get 30x9.50s. You can also consider
31x10.50s, but from what you have said, I think the 30s are better suited to
what you plan on doing.

Jeff Strickland

"The Commish" <rightback@ya.com> wrote in message
news:XESjb.155907$ko%.86125@news04.bloor.is.net.ca ble.rogers.com...
> Im interested in putting some 30 x 9 's on my YJ. I've got 235/75R15's on
> it now. This jeep is used only a little offroad, mostly up at the cottage
> (and so I can get to it in the winter!) I haven't touched the suspension
> yet. I decided on a set of Bridgestones, but when I called
> a few tire shops to get prices, a sales guy told me that he wouldn't
> recommend the 30's because they are considered a "truck" tire as opposed
to
> the 235 which aren't I guess, and therefore have a thicker ply and need
more
> air, which will make the ride in the YJ too stiff and unbearable. I had
> never heard
> this before, but it seems to make sense. Is this true?

No. Not "no" exactly, Hell No.

First, the 235s you are looking at can be either passenger car tires, or
Light Truck (LT) tires.
Second, 25 psi is 25 psi.
Third, if yuo get somewhere where the tires are too hard and are
compromising the traction, you can let the air out to between 10 and 15 psi,
and probably get enough additional traction to move on down the trail. You
can drive like this to a gas station to refill the tires, but you will be
perfectly safe at trail speeds. (You will experience a squishy and numbness
in the steering response, so the trip to the gas station for more air should
be kept to speeds below about 30.)
Fourth, you are really going to get 30x9.50s. You can also consider
31x10.50s, but from what you have said, I think the 30s are better suited to
what you plan on doing.