Centax to get the tire here in the US contact eddie at Team Br00d for supply on the tire. He recently took over distribution of the tire here int heUS market.
The old carcass and construction the Mark is talking about used a larger rim and a very square shoulder. The new tire, rim and insert are different with the rim being a more common size. The new tire does not like as much airgap as the old construction.
UF1 Seattle - SPEEDWERKES - VBC Racing - Team ORCA