Just in case anyone has been wondering, this car is still around. I'll put a brief update here to bring the thread somewhat up-to-date.
Despite the mileage growing very slowly in the last 5 years, I still use this car relatively frequently and enjoy it a lot. As you can see below, it's mostly behaved itself mechanically. I took care of rod bearings and I'm really glad I did - at 78,000km they were in shocking condition - something I have noticed to be a bit of a trend with Z4 M - the rod bearings usually come out looking worse than you'd expect for the mileage compared to E46 M3s.
There have been times when I have considered selling, but it's just such a special car in such nice condition, I really can't bring myself to sell it. It's so much fun, and such a unique car. After several years, it's still a winner in my book.
2020
01-Jun-20
Replacement Washer Pump
07-Jul-20
New Spark Splugs
New Windscreen Wipers
13-Aug-20
New MAF Sensor (Bosch)
06-Oct-20
78,071km
Inspection 1 Service
Donford BMW
Valve Clearance Adjustment
Diff & Gearbox Fluid
Valve Cover Gasket
Connecting Rod Bearings
Clean Throttle Bodies
12-Oct-20
Wheel Center Caps
Wheel M Stickers
Refurbish Wheels
14-Oct-20
Sport Short Radio Aerial
2021
01-Oct-21
83,274km
Donford BMW
Oil Service
Brake Fluid
New Battery
New Constant Pressure Valve
2022
19-Sep-22
2x Stabilus Boot Shocks
26-Sep-22
87,070km
Brilliant Mechanical Workshop
Oil Service
Brake Fluid Flush
Coolant Flush
Clean ITBs and ICV
13-Dec-22
Brilliant Mechanical Workshop
87,528km
Engine and Transmission Mounts (Genuine BMW)
Installed BlueBus Bluetooth
2023
16-Oct
Idler and Tensioner Pulley (INA)
AC Tensioner (INA)
Main Belt (Continental)
01-Dec-23
89,000km
New Battery (Willard 652 70AH 590CCA)
2024
08-Aug-24
90,777
Garage 808
Oil Service (BMW 10W-60)
Brake Fluid (RBF600)
Diff Fluid (OEM with Friction Modifier)
18-Nov-24
91,053km
Garage 808
Replace Front AntiRoll Bar Drop Links (OEM)
ReGas AirCon
23-Nov-24
91,125km
Cape City Auto Centre
Replace 4x Tires Michelin Pilot Sport 5
Wheel Alignment
2025
23-Apr-25
92,200
The RetrofitLab
Osram D2S Xenon Bulbs
Installed Evo FX-R Xenon Projectors
03-Jun-25
92,237
Garage808
Remove Tracking Device
Secure Right Engine Mount Bracket Nuts
Secure Positive Battery Terminal
A few pics showing proof of life: