Originally Posted by
CyclingVirgin
So I was thinking maybe a couple things can be the problem but please, you guys be the judge.
1) The tires being 700 x 20
2) The road not being SUPER smooth
3) The wheel was not on tight enough? (How do you know what is too tight?)
4) The wheel not being true? (But when I was riding it, it looks straight and smooth riding down the hill)
5) Too much or not enough air?
But the most important question, is it SAFE for me to ride it?
Be sure to put in at least 100psi at that width. That's what you'd need if you're 140lbs. If you weigh more, adjust accordingly. Make damn sure your quick releases are as tight as you can get them without hurting yourself.