Although no tuning has been announced, AC Schnitzer will also fit a new exhaust system to the X4 M40i, removing that pesky sound-sapping particulate filter. Extensive visual tweaks have been made ...

Last summer, a BMW exec ... the Z4 M40i’s $3,500 “Handschalter” Package (it isn’t available on the base sDrive30i four-cylinder Z4) also includes different chassis tuning, black Shadowline ...