15x7 = Crawler, 15x8 = Driver? - JeepForum.com

 
LinkBack Thread Tools
post #1 of 5 Old 09-24-2013, 04:03 PM Thread Starter
malligator
Registered User
2006 LJ Wrangler 
 
Join Date: Aug 2012
Posts: 24
15x7 = Crawler, 15x8 = Driver?

I've had my 06 LJ for a little over a year now and it's getting to be time for me to buy my first set of shoes for her. I'm strongly considering going down to 15" so I can use floatation size tires in the C load range. Right now it'll be 31x1050 and maybe later 33x1050. Anyway...from my completely unscientific internet research it seems to me that 7" rims are ever so slightly better for crawling while 8" are ever so slightly better for adventure driving. Am I correct?

15x7:

Can air down lower and hold a bead, but can't air up as high without running on center of tire.
Buldges out more to protect rim.

15x8:

Can run higher psi so it's better on the road with better mpg.
Flatter tire profile for more on-road manners.



FYI...I'm looking to maintain my LJ's adventure vehicle status. I've driven her all over Arizona camping, hiking, climbing, etc. I like it when my plans take me over moderately rough stuff, but I don't go searching it out. The only reason I'm even considering 7" is because I never plan to run wider than 10.5" tires and I know there are lots of 10.5 on 7" rim fans.

malligator is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 09-25-2013, 12:56 PM
WXman
Registered User
2001 WJ 
 
Join Date: Jun 2003
Posts: 3,515
Honestly, I think the real world differences between a 7" and 8" wheel are almost impossible to detect. Either will work great for any 10.50 width tire.

'92 YJ - heavily modded
'96 ZJ - heavily modded
'05 KJ CRD Limited - 370 lb./ft. from a 4-cylinder and trail ready. Pure awesomeness.
'11 Mango Tango JKU Sport - Mods
'12 Dozer JKU Sport S - 6-speed - ACE rock rails - Max Tow package - Daystar spacers - 33x12.50 Duratracs
WXman is offline  
post #3 of 5 Old 09-26-2013, 09:27 AM Thread Starter
malligator
Registered User
2006 LJ Wrangler 
 
Join Date: Aug 2012
Posts: 24
Appreciate it, WXman. The fact that there's not a lot of discussion about 7" vs 8" with 10.5" tires should tell me it doesn't matter a whole lot. 12.5" tires? Sure.
malligator is offline  
post #4 of 5 Old 09-26-2013, 12:31 PM
Charley3
Web Wheeler
1999 XJ Cherokee 
 
Join Date: Mar 2013
Posts: 5,538
Quote:
Originally Posted by malligator View Post
I've had my 06 LJ for a little over a year now and it's getting to be time for me to buy my first set of shoes for her. I'm strongly considering going down to 15" so I can use floatation size tires in the C load range. Right now it'll be 31x1050 and maybe later 33x1050. Anyway...from my completely unscientific internet research it seems to me that 7" rims are ever so slightly better for crawling while 8" are ever so slightly better for adventure driving. Am I correct?

15x7:

Can air down lower and hold a bead, but can't air up as high without running on center of tire.
Buldges out more to protect rim.

15x8:

Can run higher psi so it's better on the road with better mpg.
Flatter tire profile for more on-road manners.



FYI...I'm looking to maintain my LJ's adventure vehicle status. I've driven her all over Arizona camping, hiking, climbing, etc. I like it when my plans take me over moderately rough stuff, but I don't go searching it out. The only reason I'm even considering 7" is because I never plan to run wider than 10.5" tires and I know there are lots of 10.5 on 7" rim fans.
You stated the situation very well for a 7" wide wheel with 10.5" wide tire.

However, an 8" wide wheel with 10.5" wide tire is a great multipurpose setup for on & off road for a stock weight LJ, or an armored XJ orTJ.

A 7" wide wheel with 9.5" wide tire is a great multipurpose setup for on and off road for light SUVs like stock weight XJ or stock weight TJ. For an LJ this would be a great street and Winter road setup.

IMO based on IME

Warning: I often edit my posts a few times to get them complete, or to correct errors.
Charley3 is offline  
post #5 of 5 Old 09-26-2013, 12:33 PM
Charley3
Web Wheeler
1999 XJ Cherokee 
 
Join Date: Mar 2013
Posts: 5,538
Quote:
Originally Posted by WXman View Post
Honestly, I think the real world differences between a 7" and 8" wheel are almost impossible to detect. Either will work great for any 10.50 width tire.
I respectfully disagree. I think the difference is noticeable. Both will work, but are not the same.

Warning: I often edit my posts a few times to get them complete, or to correct errors.
Charley3 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome