Can someone please explain this to me? - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 06-29-2013, 01:22 PM   #1
Join Date: Dec 2012
Posts: 70
Ribeye3 is on a distinguished road
Can someone please explain this to me?

Size Backside Offset Bolt Circle Bore

17x9 5 1/2 +12 5-5.0, 5-4.5 81.5

17x9 5 1/2 +12 5-5.0, 5-4.5 87

What does all this crap mean??
Someone please explain backside, offset, bolt circle and bore to me!!

What does the 9 mean after the size? I understand 17" rim but what about the 9? I have seen other rims 17x8. I don't understand offset or bore either. I am also a little lost on the bolt circle. I know I need a 5 bolt rim but what does the 5.0 and 4.5 mean after that?

I want to make sure I order the correct wheels.

Thanks in advance!!
Ribeye3 is offline   Quote
Old 06-29-2013, 04:25 PM   #2
okcscott's Avatar
Join Date: Mar 2013
Location: Oklahoma
Posts: 297
okcscott is on a distinguished road

See if this helps, I think it's from discount tire. you said you need 5 bolt, but there is a bunch of 5 bolt patterns, bore should be center hole in rim. this bump it to the top and maybe get you more replys

Example Wheel Size: 16x7 4-100 40S

Wheel Diameter: The size of the wheel as measured across its center.
Wheel Width: The width of the wheel as measured across its barrel from the front rim to the rear rim.
Bolt Pattern: The bolt pattern indicates the arrangement of lug holes and consists of two elements: the number of bolts, or lugs (4 in this case), and the distance between them across the center of the wheel (100mm in our example). For more detailed information, visit our Bolt Pattern page.
Offset: The offset of a wheel is what locates the tire and wheel assembly in relation to the suspension. More specifically, it is the measured distance between the hub mounting surface and the centerline of the rim.

okcscott is offline   Quote
Old 06-29-2013, 07:30 PM   #3
BadOleRoss's Avatar
Join Date: Jul 2011
Location: Lynchburg VA
Posts: 898
BadOleRoss is on a distinguished road
This might help a little!
2013 JKU True Blue, 4" Zone Lift, 35x12.5x17 Nitto Trail Grapplers, ION 171 Black and Machined Wheels
BadOleRoss is offline   Quote
Old 07-05-2013, 10:13 AM   #4
Verf's Avatar
Join Date: May 2013
Location: Western Massachusetts
Posts: 534
Verf is on a distinguished road
Just so I understand things. Offset is the relation of where the rim attached to the hub in relation to the center of the rim? So a 0 (zero) offset is dead in the middle of the rim, a +12 puts it further inside the rim (thereby sticking the rim further away from the Jeep?) and a -10 puts the rim further under the Jeep?

I have a '06 Rubi with the 16" rims and stock Wranglers. PO's used it as a Pavement Princess. I'm looking for a second set of rims to put on a set tires for off-roading. Was thinking of 17" or 18" x 10"wide. If my thinking is right (maybe?), but the larger the rolling mass, the easier to get over things, tho more effort to do so).


Verf is offline   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 04:43 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner