With all the recent talk of how to install larger tires on the HF frames, it made me surf a little. I found some 4 lug 13" tires, would those work?
http://tinyurl.com/22lbt5
It states:
Tire Dimensions: B78 x 13in., ST175/80D13
Load Range/Capacity: B/1100 Lbs.
Tire O.D.: 24in.
As compared to the standard HF wheel/tire
http://tinyurl.com/224v8n
Lug holes: 4, 0.585'' diameter
Axle diameter: 2-1/2''
Rim: 12'' x 5''
Weight: 18-3/4 lbs.