Having done the diu tyre change on a bike years ago, I learnt that you can stuff it up, so much so that i pinched the tube on the front wheel, was riding to work, blew the front wheel, got the death wobbles, couldn't hang on, it nosedived and i ended up in/on the side of a parked car.
10 mins earlier I was on general holmes drive in peak hour traffic.
the moral of my story, if there is the remotest chance of damaging the tube, get the experts to do it.
john
