Not had a fitting problem with any of EBC's Red, Yellow or Blue pads in either my Corrado, Polo, Audi A2, e34 M5 or Z4M.reactivate said:EBC pads don't fit the Z4 due to their backplate being manufacturered incorrectly. I bought some on my old e85 and proved the fault and got a refund. They also make hardly any difference which isn't really worth the price hike. They are poorly manufactured. You are better off with OEM components in every part of a car especially the brakes. Remember, old components will always perform poorly so replacing them with new will be enough.