Wheel size myth busting
03-05-2014, 07:23 PM
#1
JK Newbie
Thread Starter
Join Date: Mar 2014
Location: Cape Coral, Fl
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Wheel size myth busting
Ok I want to run 35x1250R18's.
I don't know if I should get 18x9 or 18x10 wheels. I have been told that 18x9 would work fine. I have also been told 18x9 would not work, causing the tire to bubble and not wear evenly.
Looking for your thoughts.
I don't know if I should get 18x9 or 18x10 wheels. I have been told that 18x9 would work fine. I have also been told 18x9 would not work, causing the tire to bubble and not wear evenly.
Looking for your thoughts.
03-05-2014, 07:35 PM
#3
Forum Tech Advisor
Incorrect on the wheel width info.
That size tire is most often designed for lifted, one ton, diesel crew cab trucks that tow 15k lbs trailers.
Because of this, the tires tend to be load range E tires that are extremely stiff and have to be run at lower tire psi to get a compliant ride. The narrower wheel works better than a wider wheel when the tires are run at lower psi levels.
If you go to the website for the tire manufacturer and model of tire you are going to run, you can look at the specs that include recommended wheel width. Typically, that size includes wheels that are 8.5" wide.
That size tire is most often designed for lifted, one ton, diesel crew cab trucks that tow 15k lbs trailers.
Because of this, the tires tend to be load range E tires that are extremely stiff and have to be run at lower tire psi to get a compliant ride. The narrower wheel works better than a wider wheel when the tires are run at lower psi levels.
If you go to the website for the tire manufacturer and model of tire you are going to run, you can look at the specs that include recommended wheel width. Typically, that size includes wheels that are 8.5" wide.
Last edited by planman; 03-05-2014 at 07:37 PM.
03-06-2014, 03:57 AM
#5
JK Junkie
Join Date: Jul 2010
Location: 36* N
Posts: 2,873
Likes: 0
Received 0 Likes
on
0 Posts
Is your concern the width of tire working on the width of wheel? All other off-road factors aside, you're wondering if you can put the 12.5" tire on the 9" or 10" width wheel, correct??
If that's the case then you're fine. I personally run a few sets of 10.5" tires on 10" wheels on the jeep. I do not drop down to single digit psi's every week because I do what most everyone else does- drive it.....a lot. I do 32k miles a year with this setup and haven't had any issues, tires wearing funny, tires losing a bead hitting a pothole on the interstate, etc.
The diesel trucks around here will stretch a 12.5" tire on to a 14" wheel. Still no catastrophic failure but obviously it isn't the best for the tire, you won't tow anything like that, and you surely aren't airing down.
So what will you use your vehicle for?
If that's the case then you're fine. I personally run a few sets of 10.5" tires on 10" wheels on the jeep. I do not drop down to single digit psi's every week because I do what most everyone else does- drive it.....a lot. I do 32k miles a year with this setup and haven't had any issues, tires wearing funny, tires losing a bead hitting a pothole on the interstate, etc.
The diesel trucks around here will stretch a 12.5" tire on to a 14" wheel. Still no catastrophic failure but obviously it isn't the best for the tire, you won't tow anything like that, and you surely aren't airing down.
So what will you use your vehicle for?
03-06-2014, 04:47 AM
#6
On my old tj I ran a 15×8 inch beadlocks on a 37×12.5 no problem so a 9 inch rim is plenty big for a 12.50
03-06-2014, 05:05 AM
#7
Super Moderator
Join Date: Jun 2011
Location: Hendersonville, Tennessee
Posts: 11,033
Likes: 0
Received 80 Likes
on
72 Posts
8" to 9" is ideal for that tire width. A wide wheel is what causes the sidewall to ballon, not a narrow one, and you lose the ability to air down the tire.
Trending Topics
03-06-2014, 05:18 AM
#8
JK Newbie
Join Date: Dec 2011
Location: Marion, Ar
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
I ran 8 inch in 305/70-16 and worked great. But on my old Tacoma I ran 285/65-16 on the factory wheel and they voided my road hazard because the tire was rated for 9-10 inch wide wheels.
Sent via paper airplane.
Sent via paper airplane.
03-06-2014, 05:53 AM
#9
JK Enthusiast
