6" WMS True Roll Wheel

A: No these do not have a disc brake adapter available for this style of rim. They weight around 3lb per rim (depending on the size).
An alternative would be to use a 6" Split Rim (2-13/16" Bolt Pattern), paired with a dual flanged hub. Answer provided by:  BMI Karts (3/7/2016)

A: Yes that size tire and rim would work together. Answer provided by:  BMI Karts (3/8/2016)

A: Yes, the overall width is 5". The '2.5' is the number of inches from the inside of the rim to where the hub bolts to the rim. Answer provided by:  BMI Karts (3/24/2016)

A: Offset is measured from the rear of the rim. Answer provided by:  BMI Karts (4/5/2016)

A: Yes a tire an be a little wider or narrower and still mount to the rim with out issue. For instance you could mount both a 6.1 or 8.1 wide tire on 7.25" rim. The tire size (11x4.5x6) is just how you described, 11" tall, 4.5" width, and 6" rim diameter. Answer provided by:  BMI Karts (5/4/2016)

A: No, that tire would require a 5" Wheel. Such as 5" Douglas Polished Aluminum Wheel. Answer provided by:  BMI Karts (8/15/2016)