The base 12-cylinder cars are by far the most common—nearly two-thirds of all E31 8-Series sold were 850is and 850Cis. BMW M3 Buyer's Guide: Every Gen from E30 to G80 996-Generation Any vehicle’s plastic fittings and rubber seals wear and disintegrate over time. In many BMW vehicles, the cooling systems fail, resulting in faulty water pumps and coolant leaks. 2006-2012 BMW 335i. 2001-2006 BMW 330i. 1999-2001 BMW 740i. Typically, these cooling system issues appear after 120,000 miles of driving.
Check your fuses, relays, wire harnesses under the hood, especially near exhaust. It is possible that some wires got displaced and melted due to heat causing a short. I would care fully check the SMG pump and wire going to it. I am not too much help with SMG, as mine is stick shift but that would be my route of debugging it.
iTrader: ( 3) It is safe to say: All S65 engines experience rod bearing wear. Not all S65 engines fail due to rod bearing wear. If the M3 is a car you want to buy, drive hard, and keep, it would be a wise investment to have them swapped at some interval. The interval depends on the car's prior use, modifications, and proposed use.

Im looking at buying soon and after doing lots of research and driving all the cars I am still torn between: 135. 335. e46 m3. Your looking at close to $30k to get a 135 or 335 with a nice 100,000 mile warranty. Or closer to $20-22k on a e46 m3 with no warranty.

2003 BMW E46 M3. Mar 24, 2016. #3. Snowdog said: If it's the front arches then this is a common problem, and often what is showing on the outside can turn out to be a lot worse once the wing is removed. I had this once, and had the wings repaired at an old school classic car place, using lead loading. Not many places do this nowadays, probably ZmpV. 294 275 120 488 111 41 357 127 338

bmw m3 e46 common issues