Thanks for that info Ben. I’ll be reaching back out to a company today, hard getting people to call you back these days. I was fortunate enough to find a manual on E Bay which gives all the info on the ballasts amounts and ratios.These are not the notorious split rims from days past, they are locking rims for tubeless tires. Any heavy duty tire sales/repair should be able to handle mounting and dismounting them. Be aware that the tire should be loaded with ballast. Calcium chloride and water is factory fill and they should be filled to 75% or above the rim.