Riding the R1 this morning, which was superb every time this week. Turned out the drive way and noticed she was pretty sluggish on turning. Once on the highway changing lanes became a major problem As the tyres got warmer the bike just wanted to go straight, even with the wieght of a mini-me on the bars trying to counter-steer!! Pulled into the nearest fuel station and checked the tyre pressure. I didn't believe it. Only 5 psi below normal ( ) ok I thought, can't make that much difference. So after getting them spot on, the bike was back on its way razor sharp as ever!! May be worth investing in one of those portable pumps for use in the garage before leaving!!