Whats the largest tire/wheel size that will fit?
We will be dealing in 10-inch wheels only. Z50s came equipped with 8-inch rims, however, 10s will fit most of them and these offer a significant improvement in high-speed stability. Similarly, 12-inch rims will fit the CT & ST70 and available widths in the 130/140 range will fit. While 12s offer even more improvement, they are very expensive and we don’t feel that the value is there, unless you are track racing. The classic CT70 10-inch wheel is 2.75″ wide. This can accommodate up to a 120 section width tire. There are also aftermarket rims available in 2.75, 3.50 and 4.00 inch widths. Generally speaking, 2.75 is the widest rim that will fit the front with a disc brake, combined with a 120/70-10 tire. Up to a 3.50 width rim can be used on the front with a drum brake and/or a custom fork setup. For the rear wheel, up to 3.50″ can be used in combination with up to a 130/70-10 or 120/90-10 tire. 130 section width is the widest 10-inch tire made and 120/90-10 is the tallest. Use of a 4.00″
