offset is the amount in mm that the mounting face of the back of the wheel is offset from the centre of the wheel.

so on a 9" wheel, offset zero would mean the back of the hub is exactly 4.5" from both edges of the wheel.

a positive offset is where the hub is towards the front of the wheel pushing the barrel in to the arch (less dish)

negative is where the hub is towards the back of the wheel pushing the barrel out of the arch (more dish)



low offset or better yet, negative offset is best for deep dish wheels for serious stance.

and just to ad, adding spacers lowers the offset by whatever thickness the spacer is. If youre looking for wheels that stick out to or past the arches, you want as little an offset number as possible, or idealy - numbers eg, -10. This applies to dish AND non dished wheels.




Maybe people who are not up to speed can gain the information they want here and it may serve useful to those looking to change their wheels too. And it goes like this...


Nissan Silvia S14a
Fronts: 18 x 9J et +20 with a 25mm bolt on spacer. (et -5 then? )
215/40/18
Rears: 18 x 9.5J et +30 with a 25mm bolt on spacer. (et +5 then? )
225/40/18

Standard arches rolled



No chit-chat please, just info.