How do you measure wheels please?

[GJUK]

I have some alloys which I have for sale.

 

How do you tell what cars they will fit please?

 

Looking at the studs, what is the standard way of measuring them holes (am I right in thinking this is the 'PCD'?)

 

Thanks!

 

Jon

[Grizzley Dell]

pcd is between centre's of opposite stud holes.

 

now i was sure when i wrote that but i may be wrong.

[GJUK]

That makes sense. I thought this but wanst sure.

 

Thanks

 

J

[Vista]

Diagonally opposite stud holes

 

You'll also need the width (preferably quoted as a J figure) and the offset. Offset is the distance in mm of the hub mating face from an imaginary centre line drawn through the wheel.

[914Driver]

http://www.thespotlowrider.com/product/ ... biles.html

 

 

 

 

 

http://www.diamondracingwheels.com/wheeldiagrams.html

[you'll get 10s on that]

The width has no relationship to J....this is a common misconception

 

J is the profile of the kerbedges and safety bead area and it just happens that this particular spec of kerbedge is shaped like a J. More modern wheels tend to be H profile which is more of a block rim. When alloy wheels were becoming opoular as an aftermarket option it was important that people ensured the wheel was a j profile as they would suit the "new" radial tyres. Earlier steel wheels had different kerbedges to suit crossply tyres such as K profile on Anglia wheels

 

Pcd is measured as many have already said ...on a 4 stud wheel... centre of hole to cenre of opposing hole Via the centrebore. Its normally easier to measure from the farside of the hole to the nearside of the opposing hole.

 

The stated width of a wheel is between the kerbedges ie where the tyre fits and not the overall width of the wheel.