offset?
Thread Starter
|
Posting Guru
Joined: May 2007
Posts: 1,275
Likes: 0
offset?
I am confused on this... am ordering my wheels and tires as soon as I decide on wheels, moto metal 951 or diamo karat 17. from what I understand the 951's sit in, towards the spring and doesn't stick out very far...I tried to look at there offsets and all but I do no understand it....I want the wheel to stick out past the fenders some, but not a whole lot, can anyone help?
Fleet Mechanic
Joined: Apr 2007
Posts: 1,433
Likes: 7
From: NH
Thread Starter
|
Posting Guru
Joined: May 2007
Posts: 1,275
Likes: 0
I got the measurements for the two I want and the ones I have..I think I got it figures out sort of.... Backspacing is what is getting me now, I understand offset, the ones I have now are 0 offset, and one of the new sets is -12 and the other is -18..that -18 will sit closer in towards the leaf spring then the -12 will..correct?
Thread Starter
|
Posting Guru
Joined: May 2007
Posts: 1,275
Likes: 0
I thought the higher the - the closer to the spring it was...and the lower the - the further out of the fenders it was...and the 0 was dead center....
I hope someone chimes in soon and can help before I order!
I hope someone chimes in soon and can help before I order!
Senior User
Joined: Jun 2007
Posts: 165
Likes: 0
i'm running 20x10's with 0mm offset and 275/65/20 goodyear wranglers. they stick out no further than my 285's on stock wheels. hope this helps
Trending Topics
Senior User
Joined: Jun 2007
Posts: 165
Likes: 0
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Post Fiend
Joined: Dec 2002
Posts: 6,245
Likes: 1
From: IL, USA
On Backspace, the higher the number the closer to the spring it is.
0 offset means that the wheels mounting surface is dead center in the middle of the wheel.
Offset varies based on the wheel width. The chart on that link does a pretty good job of showing what offset and backspace are at different widths.
On 99-04 trucks you want to stay around 4.5" Back Space....so if it's a 10" wide you'd want -25mm offset or so, if it's a 12" wider you'd want a -51 offset, etc..
05+ trucks you'd go any where from 4.5" - 5.75" back space depening on how far you wanted them to stick out.
0 offset means that the wheels mounting surface is dead center in the middle of the wheel.
Offset varies based on the wheel width. The chart on that link does a pretty good job of showing what offset and backspace are at different widths.
On 99-04 trucks you want to stay around 4.5" Back Space....so if it's a 10" wide you'd want -25mm offset or so, if it's a 12" wider you'd want a -51 offset, etc..
05+ trucks you'd go any where from 4.5" - 5.75" back space depening on how far you wanted them to stick out.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Negative offset: When the back of the bolt pad is closer to the inside of the wheel; when mounting surface is inboard of the rim centerline. Tires stick out.
Positive offset: When the back of the bolt pad is closer to the street side of the wheel; when the mounting surface is outboard of the rim centerline. Tires tuck in.
Positive offset: When the back of the bolt pad is closer to the street side of the wheel; when the mounting surface is outboard of the rim centerline. Tires tuck in.
Thread Starter
|
Posting Guru
Joined: May 2007
Posts: 1,275
Likes: 0
thanks a bunch guys!!!!
both rims are 20x10
so the -18 offset and the 4.79 backspacing will be tucked in
and the
one with the -12 offset and the 5.3 backspacing will be outside the fenders?
I think I got it right...
ONCE AGIAN I CANNOT THANK YOU GUYS ENOUGH!!!
sorrys guys, my truck is a 2003 f350..if that helps any
both rims are 20x10
so the -18 offset and the 4.79 backspacing will be tucked in
and the
one with the -12 offset and the 5.3 backspacing will be outside the fenders?
I think I got it right...
ONCE AGIAN I CANNOT THANK YOU GUYS ENOUGH!!!
sorrys guys, my truck is a 2003 f350..if that helps any
Post Fiend
Joined: Dec 2002
Posts: 6,245
Likes: 1
From: IL, USA
thanks a bunch guys!!!!
both rims are 20x10
so the -18 offset and the 4.79 backspacing will be tucked in
and the
one with the -12 offset and the 5.3 backspacing will be outside the fenders?
I think I got it right...
ONCE AGIAN I CANNOT THANK YOU GUYS ENOUGH!!!
sorrys guys, my truck is a 2003 f350..if that helps any
both rims are 20x10
so the -18 offset and the 4.79 backspacing will be tucked in
and the
one with the -12 offset and the 5.3 backspacing will be outside the fenders?
I think I got it right...
ONCE AGIAN I CANNOT THANK YOU GUYS ENOUGH!!!
sorrys guys, my truck is a 2003 f350..if that helps any
No, the 5.3" Backspace will be tucked in and rub on your leaf springs.
4.79" will stick out further (not a lot).
Post Fiend
Joined: Dec 2002
Posts: 6,245
Likes: 1
From: IL, USA
How far it sticks out is easier to figure out based on Back Spacing.
Offset will tell you back space and how far it will stick out if you know the width as well.
They each tell you where the mounting surface of the wheel is.......they just use different reference points to get the measurement.
The 4.79" B.S. on a 10" wide wheel will stick out a little.
As for rubbing the leaf springs, that will also depend on what size tires you go with.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
The more negative offset, the more the tires stick out. -18 will stick out of the fenders more than -12.
Backspace (also called rear space in the image) is the measurement from the mounting flange to the inside lip of the wheel.
Offset is the measurement of the mounting flange to the wheel center line.
Backspace (also called rear space in the image) is the measurement from the mounting flange to the inside lip of the wheel.
Offset is the measurement of the mounting flange to the wheel center line.