I'm running Toyo 255/65R16 on 8 inch wide NP5 rims. The OD is 738 mm (2mm more than the 235/70R16 Toyos I had on before with the 7 inch LR alloys) and the width of tread that contacts the tarmac is 260mm.
They cost $260 each from Tyre Power and are good on road (about 90% of my driving).

