63-64mm measured inside the wheel not the outside where the TVR emblem sits , it is smaller on the outside of the wheel ie approx 50mm. Just thought, I am measuring the Oz type wheel fitted to the S1/S2 is that the one you mean?
Edited by clarenceboddiger on Monday 11th August 22:35
I have a set of slotmags that I'm planning on fitting to my Audi. The problem is that my vernier guage won't fit inside the wheel so need someone to measure the diameter of the hub on the car as there'd be no clearance problems with the verniers then.