New set of 24x12-12 Carlisle Turf Master tires on wheels. I have two different designs of these, one is for 54" or 60" deck Z900a, b, e, m and the other fits R series machines and the other is for 72" deck A, M or R series machines. The wheels have a 4 on 4" bolt pattern so they probably will fit some other machines like Exmark, Toro, Etc. $200 plus tax.