It's been a while since I visited this site. It's almost 2 years since I posted this thread. So far we still have the car, and I think we will be keeping it after what has happened in 2020. We have replaced the rod bearings at 61k kms. Here is the laundry list of things that was done along with it.
rod bearing set, and connecting rod bolts
vanos pressure hose
timing chain guide
engine mounts
lower control arms
tie rods
drive belt pulleys (idler and tensioner)
tensioner (a/c and auto belt)
drive belts
coils and spark plugs
air filters
wheel alignment
Clutch, pressure plate
Dual mass flywheel
Release bearing, release bearing guide
Clutch fork pivot, clutch release arm spring
Crankshaft bolt, Crankshaft rear seal
SMG relay
Driveshaft flex joint, Driveshaft center support bearing, Driveshaft end bushing
Transmission mounts
Exhaust pipe gaskets, hex nuts, torx bolts
Gear box oil
Jon of Auto38 has been great in serving the car, his craftsmanship is top notch. We are very happy with car, knock on wood that it doesn't blow up in 2021... otherwise we have to file for bankruptcy 🤣 . I wasn't planning to do these things in 2020, the plan was to do this over the next few years. It was only to check for a misfire in July, one thing led to another.
I also have some bits and bobs that maybe some owners of E60 M5 would be interested on. 5 old coils, 1 new coil, new release bearing, clutch alignment tool, input shaft seal, old driveshaft flex joint, tire rod, etc. Just message me if you are interested on these parts.
We are still breaking in the rod bearings, so far just 300+ kms only. Some of you probably have seen the car over the past few weeks, usually we go for a milk run at Te Horo and some vegetables and strawberries at Penray. So the things in internet about the E60 M5 is true and not true. Happy to share our ownership experience to anyone that is interested. I also would like to thank @Olaf and @TermiPeteNZ for help and advice.