Note that lower ambient temperature means lower tyre pressure. I checked the pressures on the GX this evening (-1 deg), they where down 7psi over normal. Note Mitsi recommend 32psi front and 28psi rear. More info:
http://www.michelin.co.uk/michelinuk/en ... 71414.html
remember, low tyre pressure affects handling, economy and tyre life...
CJ