Thanks for the help and info Tony

I will struggle too with the profile - I am on 640 and I know its only a 10mm radius increase but its gonna be tight. Its on a track car so not too worried about mods to fit as like you say the next 10 years is now mapped out for us tyre wise lol.

Just while we are on topic and you are in the know - how much wider in cm is the 245 over the 210. I know it should be 35mm but is that the actual difference in reality?