1st new car I ever bought & still own 12 years later, tracked it when under warranty, only issues was brake rotors & too much restriction in power steering boost. STOCK SUSPENSION WAS SHOT AFTER 50,000 MILES, went to turner ms bilstein sport/h&r sport springs. Never looked back. Re-did rear this year. Under bilstein warrenty. Issues were blown head gasket @105,000 miles, rebuilt rear axles@ 115,000 & VANOS @ 95,000& lower control arms @ 90,000 all par for the course, mobile one only in engine, trans, rear & power steering 25 mpg.
None - drive in summer, nice days only, plan to keep forever. Classic 4 door m3 kumho makes some great tires @ an even better price.