the bridge truck rims are 12", my 819 uses 11", i believe the rest use 10", i may be wrong ( i dont think so ) on the sizes, IE 11,10,9.( ill check on this ) but i do know the the TM shows THREE differ sizes. the 819 uses 1200s , i have both 11 and 12 on the 819, if i have 12 on the inside or on...