Please see the attached photographs, I suggest that the belt deflection is measured using a 7.5kg weight tied around the belt. If you measure from the splash guard we’ll be able to get a clear and constant measurement. For obvious reasons I’ve used a vehicle that’s stripped for the photographs.
I’ll then carry out the same measurement on a new car ready to leave the M3W shop and we’ll have a base figure to work from, hope this makes sense to everyone?
Mark Evans
So that looks like broadly 10mm sag on the top run then. Not too sure how easy it might be for us to see that top side of the belt when the car is just on jacks. Would you be able to do that perhaps on the bottom run, as it might be easier to repeat at our end? Great help though, thanks!
