GDay Omega, found this for ya,
I had K on my 73 XJ6 Jag rims & changed them to a J rim so the tyre doesn't roll of the rim as easy during hard cornering or out of control moments :cool:
J, JJ, K, JK, B, P AND D : TYRE BEAD PROFILES / RIM CONTOUR DESIGNATIONS.
The letter that typically sits...