FYI: The MZ-dealer here in Sweden just told me that both wheels is the same as Yamaha uses on their offroadbikes, the rear wheel(yadadish ) is the same as the TTE 600. The frontwheel should be from the TTE or the XTZ 660 (i suppose that XT600 and TTR600 uses it to).
Crap, all the "innerspokes" on the left side where broken on the backwheel now
Edit: Now i looked at the TTE backwheel, and it looks very much like the XTZ wheel. These wheels looks the same as th MZ:a on the sprocketside, but not on the brakeside... Grrr...