It appears that SEMA Spec 5-1A has been replaced by SAE J2530.
(I talked to someone from SEMA)

So, I joined SAE and downloaded the specifications for Aftermarket Wheels....ouch!!!! $45.00 for 9 .pdf pages I'm sure someone will tell me that I could have found this for free knowing my luck

It does have all the information on what should be stamped/marked on the wheels*, test and procedures need to be performed as well as the engineering formulas to figure out the Bending Moment and the Radial Load, interesting stuff...........

*manufactures name or trademark, part number, country, wheel load rating and something new I've never seen on a wheel=largest diameter tire at it's maximum rated inflation

Mike on the other other thread I steered you to SAE

Did you need the spec for the water-cooled rims or for the 3-piece heads?

Were those welded or threaded?

Mike

oh yea...thanks to Tim as well

that was indeed the correct spec, I just was not too sure due to the description and from the SAMA spec that Ken mentioned that the PCA wants rims to be built to.

I just wish the information from SAE was cheaper, tons of stuff I'd like to download and read......

I feel the same way about getting the information. Couldn't get my boss to stump up for the costs. I was looking for ratings on automotive wires: current vs gage & strand counts, also fuse ratings vs circuit current.