On all the new ones (8) I've seen, the tyres have been 165/80/15 Yokohamas on Black painted 5” x 15” centre lock wire wheels. G
Having seen Brian's New Car at 'Station Garage Taplow' (better name IMHO) I am sure you are correct as above GLLHG.
Re Brian's car, an interesting addition to the mix - 'More head scratching decisions each day? do we have one for every occasion yet?'