the needles and the gauge motor behind it does not have a marking. So there is no way to tell whether the needles are pointing correctly or not.
My only way to check now is, based on previous reading, assuming no changes.
1. Temp gauge - manually adjust until the temp stays slightly below mid.
2. RPM - idle about 700rpm, on P or N, aircond ON
3. Fuel gauge - max when full
4. Speed - 3K RPM, I believe the speed should be about 120-130km/h. Can someone confirm with this?
Specs: E36 325i(A), 17" 225/45 rims. No other mods.