If it means squeezing into the same "normal sized" lane or being in the gutter, then no. If there's a bike lane or the car lane is rather wide, then yes. They've already had to wait for a gap in traffic to pass me once, it would be rather rude to make them wait and do it again, all so I could save 8 seconds. Which ever is safest, I do, although there are times when a lot of time can be saved make up for a bit of risk.