Martin is probably right. I can't tell by looking from the wheel outside if this is the RH-5 type but here are pictures for reference. The RH-5 is hazardous. Those noted as obsolete are probably the ones that are also hazardous. Unfortunately I don't have pictures of the third possibility, Kelsey Hayes rims.
Last edited by buoymaker; 07/26/20223:24 PM.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
