I have a Z50R set up for motard. It uses the stock 8 inch wheels right now. I would like to upgrade from the spring forks to an oil bathed setup such as SP5's or CRF70 forks. Regardless of my choice, it is pretty much impossible to use the Z50R wheels in the CRF type forks. So I would naturally go with a 10" CRF50 front wheel. So my question is: Is it bad to have different size wheels front and rear? I ask because people are always converting their bikes to 12/12 or 17/17 or whatever. Is this just to lower the front end or is there a handling issue with different wheel sizes? So will an 8/10 setup be fine for motard?