Yes they will stick out more than RAs, expect a certain amount of scrubbing on bumpy roads or if you have a load on, OK on smooth roads (if there are any of those left anywhere, certainly not in Sheffield!). If you're at standard ride height it won't be so bad, I have a small (30mm I think) drop. I ran RZs for some time before I got sick of the scrubbing. Lovely looking wheels but just not really suitable for use around here, so I've gone to RAs now which also fit over my Wilwoods better. If you google for 'offset calculator' or something like that you should find a helpful tool that will work out the difference for you if you put the numbers in.
I sold a set of 4 BMW RZs with two centre caps, OKish condition the other week for like £110.
I have another (no centre cap) in my loft if anyone wants one

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My car is lowered, not sure buy how much but i'd guess at -30mm as its not stupidly low.
May do a test fit if there is scrubbing issues then as it will annoy me.
£110 is cheap if the tyres are ok. As said ive seen centre caps alone go for £80+
Thanks for the help.
