Had low tyre pressure coming home the other night when it was cool after a few hot days. So I've been checking it regularly since and notice a lot of variation with temperature, which is from 15-40 in Melbourne these days. It was around 16 this morning and my front was 36. Came home this afternoon, temp around 30 and tyre pressure was 41. The bikes been sitting in the shed all morning. So WTF do I set my tyre pressure to?