Don't confuse the two different wheel sizes. There respictive numbers do not match. A 10.00x20 is bigger then a 10.00x22.5.
A 10.00x20 is the same as a 11.00 22.5. The 22.5 wheels are the tubeless replacements for the tube type 20's.
Jason, I think your truck will be fine steping up to the 9.00 tires...they will be a little taller making your speedometer a little off.
Mike B
