Got few questions through PM, looks like folks already getting their covers in the mails. :-)
The cover that I link is the one I used. It will be a little hard to get around the wheel but it should be like that otherwise the fit would be not tight in the end. After you fit the cover around your wheel you find a gap about 10mm between the edges that need to be sew together. When you start cross sewing the leather will stretch and the gap will close. Remember you need to pull hard just enough to close the gap if you pull too hard the thinner thread will brakes. The gap won’t close when you pull just one side, you have to cross stitch two opposite sides before you pull the thicker thread. The trick is how to start sewing. I did it my way but I am sure there are others better cleaner way to do it.
Basically I made a nut at the end of the thread that I am going to use for stitching. The very first time I went with the needle through the underside of the cover so the nut will stay invisible, then I went through the opposite side top and pulled two sides together making a staple, like at the end of any zipper. Then you go with your needle under the stitch that is on the other side of the cover edge. Repeat the last step and pull the thread, bringing the sides together.
Please look at the pictures below, I hope it help.