Sorry everyone,
I’ve been wrapped with work and not had chance to check on this forum.
Tyres have since been sold.
In answer to other question on calipers. They’re from an e46 m3. The calipers are the same on the z4m but use different carriers.
Unsure if these are a direct fit to other models. Probably worth doing research to see if anyone else has done this mod first, before committing.
PM replied to.