Size of original SLR wheels (not MBs)

[fergus]

Can anyone recall the size of the wheels fitted to the original SLR?

I'm currently running 7/22 & 6/21, but wondered whether 8/22 & 7/21 will fit/be suitable? Are these likely to rub on the arches? Are spacers required?

[fergus]

sounds like a plan! thks