Wobbly Wheels (Not 7!)--What are They?

[Taber10]

I got a pair of Wobbly Wheels, as made famous by Lotus in the 60s.  I don't know how to measure them, but they are smaller than the 14 X 6J wheels that came on my Caterham.

Only marking is "Ce" on the inside.

 

I am hoping that someone can tell me something about these wheels--at least where to measure them to get the right size.

 

Thanks in advance.

 

Taber

[11Budlite]

 

You have to measure at the bead seat per this diagram, both the width and diameter. They're probably around a 13 x 5" wheel. The PCD is determined by measuring across the bolt holes, could be 4 x 3.75.

 

As far as who made them, I'm not sure. They could be originals but there are new wheels available. 

 

http://www.leechapmanracing.com/wheels.html

https://www.tonythompsonracing.co.uk/parts/other-car-parts/wheels-magnesium-wobbly-webs-for-lotus-222323b27-etc-fronts-5x13-each/

 

Edited April 21 by 11Budlite

[panamericano]

If these are original, magnesium, be very careful with them.  I had an original explode once, sitting still, minimal psi, on a Formula Jr.  For use, new ones would be better.  They are available in mag or alum.