Had my T28 all seasons van since new. Now on 21,000 miles and ran 36psi since new all round on 275/40/20 Leighton alloys. Not a huge fan of the tyres “RX motion road x” (will be replaced with Michelins) however still got 5mm all round left and even wear. I don’t chuck the van about or really much above 70mph at all. Reading through the forum I’m really happy with mileage vs wear.