Wheel offset working outy guide thing...

[MR04AG]

For those wanting to sell their wheels who constantly get asked the offset but don't know how to work it out... here's a guide!

You can work out the offset roughly if you stick a ruler or tape measure through the centre cap hole with the rim sitting face down and measure the width of the rim in mm from lip to lip, this will give you the overall width of the rim in mm.
Now measure from the outer front lip to the face of the rim that bolts up to the hub. you can sit a ruler or board or something across the front of the rim and measure from it through the centre cap hole to be fairly accurate.
If the rim width is 150mm and from the outer lip to the hub face is 75mm you have a 0 offset, meaning that the rim bolts up to the hub face at the centre.
If the rim's 150mm wide overall and from the outer lip to the hub face is greater than half the overall width, say 100, you have a negative offset of whatever the difference is between the centre of the rim (75) and the distance you've measured (in this case 100) so they're -25 offset. vice versa for + offsets.

I hope this helps someone
Post if it's unclear and i'll explain further... or might post a pic do demonstrate.
But prolly won't, lol...
others feel free to post pics though

[fade-e]

although i already knew this, +rep for explaining and posting

cheers

[WDE_BDY]

http://www.toymods.net/forums/showthread.php?t=46490

That should probably be stickied or something.
Best to measure both sides to get a consistent measurement. the method I posted also works with tyres still fitted to the rims.

Callum

[seamonsta]

Why would you measure anything when nearly all the wheels I have ever looked at have all this info cast/stamped on them! Take a wheel off, clean up the inside of the spokes and mounting hub area and you will see PCD(112 etc), Offset ( ET35 or just 35P etc) so if it has 4 stud holes with a PCD of 100 then they are 4/100 with whatever offset is indicated, takes the guess work out of it.

[WDE_BDY]

Seen plenty of wheels with no proper markings. Particularly 2 or 3 piece wheels, my Speedstar RS-8's only have a sticker with the offset printed on it but it gives 3 different options on the one wheel.

Callum

[DLA11D]

http://www.rims-n-tires.com/rt_specs.jsp
this is a site i use.

[SilverRA23]

So to clarify for my old brain, 12P stamped in a wheel means +12?

[PeteH]

Hi,

Yes, 12P means the wheel has +12mm offset.

Pete