This was response from Vredestein USA:

Good Day Graham

We are not able to sell the Space Saver Spare. The only distributors are Authorized Automobile Dealers. You would need to contact a Mercedes dealer that can help you with the correct size for your Mercedes.

I'm sorry i could be of more help. Good Luck to you

Regards

xxx xxxxx
Office Manager

__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5