[Mike_RS]

Hi guys,
I've bought some M performance calipers (370mm versions), and I need to get some discs. I was considering the dimpled/ groved M Performance discs but I've heard they make a "whoosh" noise whilst driving and they also cost a fair bit, too so I've been looking for alternatives I.e. Non BMW versions.

But after looking for sometime I'm struggling to find anything! The closest I have seen which may or may not fit is from a company called ZimmerMann. They do these in blank, drilled, slotted and drilled. Link below.

http://m.buycarparts.co.uk/zimmermann/7890750

Does anybody know if these are the same size/spec as the m performance discs and if there are alternatives out there can you please point me in the right direction?

Thanks!
Mike

[jww///95]

I thought BMW had a 370mm rotor off the m sport that lacked the dimples and slots... That is if you want to stay BMW vs aftermarket.

For aftermarket big $ I think ecs has a 370mm two piece rotor as well without the slots.

[Mike_RS]

Thanks, I know BMW sell the plain M sport discs but these are nearly £500! Can't figure out why they charge more than the M performance discs?! I'm hoping to save a little money on discs by going aftermarket.

Can anybody confirm if the ZimmerMann discs in the link are the same dimensions as the BMW versions?

[DrifterX]

If you plan on buying aftermarket, make sure they have aluminum hats like the OEM rotors do. Otherwise, you'll be adding weight... these discs are already pretty heavy due to their size, you don't want to add more.

Unfortunately, I don't know of an aftermarket rotor that would be cheaper