Quote:
Originally Posted by 97 SL320
Another way to do this. Remove the belt, make a mark on the back ( smooth flat side ) then measure around the belt back to the mark. This is the outer circle measurement, have a look at the belt #, usually part of the number is the OC measurement in MM.
Also count the ribs as this will be part of the belt number.
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I think the old belt has stretched and become a bit loose so not sure a measurement would work too well.