Stupid Question about wheels

[jaxon]

I have a set of old wheels. No tires on them. How can I determine their size?

[RickM]

Are they Porsche wheels? Steel or alloy? Fuchs? Brand?

The diameter and width are easy enough to determine. The offset a bit trickier. Also, the size may be stamped on the inside of the wheel.

This thread should help you out: offset on BBS rims

[KTL]

Look on the backside of the wheels, inside the spokes. On an original Porsche wheel, there should be some stampings or castings that resemble something like this:



The above picture is what you'd find on the back of a 16 in. diameter, 6 in. wide Fuchs wheel like this:

[jaxon]

Does the 6 on the silver pic tell you it is six inches wide?

What does the J mean?

Also...if the wheels are aftermarket and there are no stamps...can you simply measure?

Sorry for the ignorance. . . I've just never known how to figure this out.

Thanks for the reply!

[KTL]

Yes. The 6 means it's 6 inches wide (but not really).

The diameter of the wheel is measured like shown in this picture from Bill Verburg:



The J means the wheel is constructed with a safety bead.

No need to apologize. Asking lets others learn the same stuff. Do a search with the search button up at the top right of the page and see what else you can find?

Like this topic:

Wheel Info Topic

[RickM]

Did you read the link I listed?

[jaxon]

I have now. For some reason I missed it. Probably all the pretty pics by KTL.

THANKS TO BOTH OF YOU!