If you started reading the
New Products page you will see a trend of 4" wheels, then there is this.
"The intent of this product is to use this tread for 4" Performance Wheels. It gives fantastic gripping performance and keeps the wheel
within size constraints."
http://www.andymark.com/product-p/am-2611.htm
seems way to obvious to be real, its December so we are all crazy.
could be wheel width to?