Hey Guys, I have just started a custom bike build. It will have a 300 rear tire. I am trying to take advantage of the sale on rear fenders at West Coast Choppers before the sale is over. My wheels are still about 5 weeks out so I don't have them yet. I will be using Avon rubber mounted on an 18 X 10.5 wheel. I want a fender that will hug close to the tire plus room for tire expansion. The space between the rear tubes is 15 1/8 inches. Is there a standard size fender width to use with a 300 tire or do I just have to wait on the arrival of the tires and wheels before I order and sheetmetal?