I'm looking to buy new summer wheels for my F55 Cooper S and I think I'm going to go with Team Dynamics pro race 1.2 but what would be the best fitment?

18x8 et45
Or
17x7.5 et45

If I went with 17x7.5 I was probably going to run with 225/45/r17 Uniroyal rainsports

With the 18x8s I would probably go with 215/40/r18 Uniroyals.

My only worry is with the 18x8s will there be enough clearance between the arch and struts? I also have coilovers going on soon so I do want to lower it as well.

I just think 18s look better on the F55 due to the longer wheelbase

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