[woodcote]

All the Slot.it Classic tourers are fitted with their 15.8mm hubs - that’s certainly to keep a uniform platform for performance. Most Group A and DTM cars ran 18” wheels in 1991-2. Production R32 GT-Rs ran 16” on the front and 17” on the back.

Scale-wise, I can never quite figure out what the size on the model in mm means in terms of inches on the prototype… 15.8mm scales up to 19.9” - but some of that Slot.it measurement is the rib inside the tyre. So what you see is 13.5mm, which scales up to 17” - assuming the model is accurate to 1:32 scale.