|
Documentation of BMW OEM 765M wheel weights – I weighed the four 765M wheels (without tires). As they’re cast some weight variation was present, so I averaged the 21x9.5 +31 to get a standardized value of 36.4 lbs and the 21x10 +39 of 36.2 lbs which will be the ‘reference’ values used in non-weighed combinations.
Using these 765M averages and the RZ05 weights direct from BC Forged, it appears the Michelin PS4S 255/40 are actually closer to 29 lbs than the Mnfr’s listed of 28. For uniformity though, as so many of the combined weights in the list are estimated using Mnfr data, I’ll continue to use Mnfr numbers where available.
And it is confirmed that the RZ05 provide 44 lbs unsprung weight savings c/w the OEM 765M, or roughly 1% of curb weight.
|