The OEM recommended pressures are 36 front and 41 rear. That's why I'm surprised - only an extra pound in each tyre but a significant difference in terms of handling. I didn't think these low profile tyres would be so pressure sensitive. Got me a little Michelin digital tyre gauge now that I'm going to keep permanently in my jacket pocket so I can check more regularly. Def worth the effort I've decidedThat is about 280kpa and unless memory fails that is what it is meant to be?