7" rim with 12.5" tire

General tire question not a taco question...

I know it CAN be done, but does anyone have any practical experience running 12.5" wide tires on a 7"rim? What did you like/not like about it?

I'm putting 33s on my Grand Wagoneer and I like the stock rims but want as wide a tire as possible. From what I have read, people begin to disagree when you get to 12.5" width on a 7" rim.

 

you may be able to pull it off on the street, but once you need to air down you're going to lose that bead right quick.

 

Actually the narrower wheel will hold a bead better than a wider rim. A wide tire on a narrow rim will "crown" the tire and you'll get uneven wear down the center of the tire.

Edit: 8" wheel would be best.

 

No.

A 7" wheel will pull the tire in to much. You'd have to run at like 20psi for even wear.

8" is the smallest you can run on a 12.5.

 

You did the chalk test?

Cause I have to run 32 for even wear..and I weigh a hell of a lot more then you do..and 8" rim

 

I would run atleast a 8 or 9" wheel

 

Gtfo haha

 

The old rule of thumb was tire was no more than 2" wider than rim...but I guess that has changed.

 

n0rth runs a 12.50 on a 7" wheel without issue that I am aware of. Granted I don't think he is overly concerned with the center wear and he now has some smaller tires that he DD's.

 

His arent 12.5s. He has never run 12.5s I thought..all tall and skinny??

 

They are 36x12.50's they just have a narrow tread like KM2's. Mine are 10" wide tire but the tread is only 7" wide.

 

Oh..thought they were 36x10 or 11s

 

Nope. I have yet to find a tire larger than a 35 that is skinnier than a 12.50. They just don't exist. haha. Except for the 255/100R16, which is extremely rare. (it's a 36x10)

 

Whole slew of Swampers out there.
http://www.intercotire.com/tires.php?id=10

 

^which is what he runs

 

No there isn't... That is where I first looked... They make a few 35x10's and such, but everything 36+ is 12.50+...

 

from his sig

36x9.8R16 TSL Radials

 

x2.. def don't like like 12.5s

 

I'm looking at actual cross sections and heights of tires, not the quoted numbers. There are 9 of them that match that criteria in TSL's alone.

 

n0rth's are listed as 36x12.50R16's. They are listed as having a 9" wide tread pattern and are 12.6" wide at the widest point on a 10" wheel. So they are likely a bit skinnier than that on his 7" wheels, but they still make my 10" wide tires look skinny.

Just like my tires are 255/85R16's which are a 33x10, they have a 7" wide tread pattern and measure about 10" wide at the widest on my 8" wheel.