Re: Race numbers
Mmmm... dont worry too much basically they need to be clearly visable from the rear ie top corner of the windscreen, some also display their number discreetly on the front too. Ours are approximately 4" x 2.5" in white. Matthew (Gingerman) I think had an issue last meet cause the letters were in black and he had to change them to white/orange..
Alternatively 1m numbers would look quite impressive and 'clearly' give you the EDGE on the track