I am also considering this, as the 315/35R20 tyres are almost twice the price of the 275/40R20 tyres that I am running on the front, and also there are no suitable 315 tyres in New Zealand at the moment, with the middle of August being the earliest avaliable from one supplier.

Since I already have very good 275/40R20 tyres on the front, but almost dead 315/35R20 on the rear, I might go for 275/40R20 all round, and then when they are all ready to replace, go for something bigger maybe 295/40R20 all round. And gaining the ability to rotate tyres front to rear will be an added bonus.

Is anyone else running same size all round? Any comments?

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