Hi, I purchased my 650 a year ago, just 1,100 miles from new on 2010 model. The bike had been garaged in a dark garage and well looked after. However, it never feels truly planted on the road until the tyres are warm, it's also extremely sensitive to tyre pressures, just 1 PSI below the recommended on either end and its doesn't feel as good. I'm pretty sure its on the original tyres, there's load of tread left on front and rear. Do I need to get these changed asap due to their age? Am I being fussy? I just want it to feel a bit more secure round the bends. Thinking of Road 5s, Mutants or Roadtecs - the bike never goes off road.