Is this not what you're after? The advert suggests it's a 22" but the measurement states it's 20" and it looks the same to me unless it's a rear of course?
I have no idea but you should be able to get the part number from the back of the wheel in the photos so you will be able to check it with a MD parts department or with Eurospares. Good luck
I have no idea but you should be able to get the part number from the back of the wheel in the photos so you will be able to check it with a MD parts department or with Eurospares. Good luck