My V50 has 45K miles on it and recently I have noticed a problem under braking. When I slowly slow down from 60 to 40 mph there is a noticable shake in the steering wheel you can feel and see. The car doesn't pull to one side or the other and if I use a moderate amount of pedal to slow down it's fine. I'm thinking it might be an alignment/ tire balance issue? Anybody else have anything like this happen to them? Thanks for any suggestions.