Hi Ulrik,
What is the size of the tires in your car?
If you have not the original size (185 R14, which means 185/80 R14) or equivalent (like 205/70), and you have smaller tires (for instance: 185/70 or 195/70), the ground clearance is decreased, as the measures from the ground to the top of each wheel well fender lip.
Make sure the tires also have the correct pressure.
Mine is (cm) Front: 65 Rear: 63,7 (185 R14 tires, soft top, full tank). From ground to the lower part of the wheel fender lip.
Regards,
Albert de la Torre Chavalera
Barcelona (Catalunya/Spain)
Feb.'64 230 SL Euro 113042-10-002432