I have 20 inch holeshots, on 11 wide by 9 high douglas wheels. My 20x11x9 combination REALLY needs to be a 18x11x9 combo.... but I CANT FIND 18 INCH TIRES THAT WILL FIT ON 9 INCH RIMS...? THEY ALL ARE 8 or 10 inch?? does anyone know of any such tires?

 

I don't think that you will find any 18 in tires that will fit on your rims. The rims that you have are made for the big 22 and 25 in mud and maybe paddle tires. You will need to get some narrower rims for 18 or 20 in tires to work the best. I bet it was some real fun trying to get the tires to bead up?