32-16 trans , 480-70-34 rears ,380-70-24 fronts , dealer brought them in narrow as they'd go 78" across outside rears, Deere position E in tire charts. Other options , 3rear 3 mid scv's , ten front weights ,loader prep package ,front fenders mounted to loader support frames , electro hyd scv's controls . Going to wait on getting loader till I need as I've got two 545d's and 5030 with loader. Really like it but wish we'd get some substantial snows to put it to work and start earning it's keep .