Don't know about the tires, but the weights I have some info, had a 1680 RWA and no problems with a 1083 and 30' 1020. Traded to a 2188 no RWA and a fast stop with the 30' 1020 did get the back end to come off a little bit, then got a 2212 cornhead, added fluid and weight bracket with 1600# and that is just enough for the corn head.