Remember when we ran car tires on the Dragon? the 205 was roughly 8" wide.Just divide the mm by 25 and you will be close enough.I got in a argument with the salesman he said you could never put a car tire on a bike rim.I said you right it only work for 40,000 miles then I had to replace it. But this look really cool,I bet the VTX will have one stock too.