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Rock crawler rims
https://auszookers.com/forum/viewtopic.php?f=5&t=18402		 Page 1 of 1
Author:  ZookZilla96 [ Thu Jan 20, 2011 10:36 am ]
Post subject:  Rock crawler rims
Hey guys,

Looking at getting some rims off low range but I'm after a decent offset and they have "backspace". Does anyone know what "backspace" is? I've never heard of it before.

Cheers
Author:  BlueSuzy [ Thu Jan 20, 2011 10:40 am ]
Post subject:  Re: Rock crawler rims
http://www.auszookers.com/index.php?nam ... =backspace

Brendan got his 16's from lowrange, but for his Navara.
Author:  93zook [ Thu Jan 20, 2011 10:41 am ]
Post subject:  Re: Rock crawler rims
its the measurement from the mounting surface to the inside egde of the wheel. kinda like rim offset but different
Author:  ZookZilla96 [ Thu Jan 20, 2011 10:49 am ]
Post subject:  Re: Rock crawler rims
So the bigger the backspace the littler the offset?
Author:  BlueSuzy [ Thu Jan 20, 2011 10:50 am ]
Post subject:  Re: Rock crawler rims
DID YOU READ THE THREAD?
Author:  Fatzook [ Thu Jan 20, 2011 10:53 am ]
Post subject:  Re: Rock crawler rims
ZookZilla96 wrote:
So the bigger the backspace the littler the offset?


The more backspace a rim has, the greater its positive offset. ( or lesser negative offset :? )
Author:  ZookZilla96 [ Thu Jan 20, 2011 10:59 am ]
Post subject:  Re: Rock crawler rims
Fatzook has understood what I've said. So if the rim is an 8" wide rim with a backspace of 4" that theoretically means there is 100mm of negative offset? just trying to work the maths.
Author:  Fatzook [ Thu Jan 20, 2011 11:07 am ]
Post subject:  Re: Rock crawler rims
ZookZilla96 wrote:
Fatzook has understood what I've said. So if the rim is an 8" wide rim with a backspace of 4" that theoretically means there is 100mm of negative offset? just trying to work the maths.


No. Offset is measured from the centre of the rim.

So a 8" rim with 4" backspace has a 0 offset :wink:
Author:  BlueSuzy [ Thu Jan 20, 2011 11:08 am ]
Post subject:  Re: Rock crawler rims
DID YOU READ THE THREAD THAT I POSTED??

8"rim-4"backspace=1/2 a rim. Which is the centreline=0mm offset
Author:  ZookZilla96 [ Thu Jan 20, 2011 11:21 am ]
Post subject:  Re: Rock crawler rims
Sorry bluesuzy didnt quiet understand the full way it worked. I'll do some working out to see exactly what backspace I need to get
Author:  Fatzook [ Thu Jan 20, 2011 11:46 am ]
Post subject:  Re: Rock crawler rims
ZookZilla96 wrote:
Sorry bluesuzy didnt quiet understand the full way it worked. I'll do some working out to see exactly what backspace I need to get


So you understand that Offset is measured from the centre of the rim? So positive offset will move the wheel centre out, which inturn locates the wheel further under the car. Negative is ofcoarse the opposite, making the wheel stick out from the wheel arch.

Backspace is just another way of measuring offset.
Author:  steak_knife [ Fri Jan 21, 2011 8:12 am ]
Post subject:  Re: Rock crawler rims
BlueSuzy wrote:
DID YOU READ THE THREAD THAT I POSTED??

8"rim-4"backspace=1/2 a rim. Which is the centreline=0mm offset



:P Are you angry??? :P
Author:  BlueSuzy [ Fri Jan 21, 2011 9:28 am ]
Post subject:  Re: Rock crawler rims
was
Author:  atari4x4 [ Fri Jan 21, 2011 9:30 am ]
Post subject:  Re: Rock crawler rims
i think he's suffering from post natal suzuki syndrome?
Author:  BlueSuzy [ Fri Jan 21, 2011 9:55 am ]
Post subject:  Re: Rock crawler rims
yet to re-birth. :lol: legit though.
Author:  atari4x4 [ Fri Jan 21, 2011 10:05 am ]
Post subject:  Re: Rock crawler rims
is that rebirth or afterbirth?
Author:  BlueSuzy [ Fri Jan 21, 2011 10:08 am ]
Post subject:  Re: Rock crawler rims
re-inCARnate
Author:  303zuke [ Fri Jan 21, 2011 11:16 pm ]
Post subject:  Re: Rock crawler rims
Backspace is also a "simple" way (aka Dumb) to know what rims will not foul on chassis components for a particular vehicle. eg if your stock rims have 3 1/2 inches of backspace and do not hit the chassis, springs or steering components, then an 8" rim with 3 1/2" of backspace will also clear, or a 10" rim, etc.

It is a dumb way because it does not take into account fouling bodywork or bumpers, or the clearance issues of taller or wider tyres, or the effect of offset on camber and caster.
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