Hey guys, i owned M3 E46 for 2 years before i got my GTR (now 2k miles on it) and i changed the engine oil every 3k miles just to be sure. I tracked the car maybe 10 times a year. I only changed oils, brake pads, tires, and brake rotors (once), and of course inspections as said in manual.
For me the difference is in changing the tranny oil which is VERY expensive and probably brakes more offen because of the weight of the car. The brakes are also expensive 300 USD for Ferodo DS2500 M3 and 800 the same pad for GTR.
brake rotors 200 USD per piece M3, 800 per piece for GTR (but they should last long when they donīt crack)
my biggest concern is th tranny, Iīm really scared to drive it HARD. I made some snow drivings (check the video
YouTube - GTR Snow driving Most) with VDC off of course.
With the M3 i didnīt ever thought about not to drive it hard, i did it all the time, now iīm scared all the time when push it... this is what makes me think to sell the GTR for maybe used GT3, or R8, or comming Cayman S clubsport