1997 C280 Motor mount diagnosis
 

Hi,was hoping for some info/help on how to check my motor mounts to see if they are ready to replace.Kind of a lousy idle but runs very well.I know how to check 124 mounts by measuring the lower part .13mm or better for good mounts.Cannot find the specs for the 97 C280.
Also does anyone know how tall they are when like new on the car.Hope i explained this right.

Thanks
Rich