Extra Fat up to 225 Wide rear tires. The difficult part was to get a wide enough fender for these monster tires. Zodiac offers an Extra Wide 9" (23 cm) version of the Fat Bob style rear fender to accommodate for Big Wheel conversions with up to 225 wide tires. This extra wide fender is available with, in 1984 thru 1999 Softail pattern, pre-drilled holes and a model without holes for custom made fender struts as well as many other Custom applications. Perfect for use with our Wide Tail Softail frame.