I have a SWB T30 camper conversion with Bridgestone Weather Control A005 Evo tyres. When it had original rear suspension, it was just awful at any pressure. After CRS fitted Koni Special active shocks, T32 springs and then spacers, the difference was superb and after a while I started to play around with tyre pressure. Given it's a campervan, I thought the pressures should be somewhere between normal and fully loaded which for the 235/55/17 devonports I have, should be: Front 44 or 48 & Rear 36 or 48. I ran 44 front and 40 rear for a good 6000 miles but could see the fronts were wearing more on the inner and outer edges which suggests under-inflation.
I have done the last 5000 with 48/48 and it's been much better: steering more positive, handling on the motorway fully loaded is way better, front tyre wear seems better, braking seems better but there is slightly more feedback over lumps and bumps which, by the state of the roads today, is quite noticeable.
Incidentally; VW commercial serviced my van recently and inflated all 4 tyres to 58psi. Max allowed (as written on the sidewall) is 50psi!. The van felt very weird and I could hear the tyres ping and resonate going over a small bumps. Seems they can't even read the correct tyre sizes......
