After spending all that effort to make the bike go forward, why stop?

If you do need to stop, how fast do you need to stop?

If you need to stop really really fast, do you want a maximum impending skid stop, or a full skid stop? (Under a full skid stop, you may lose traction with the ground and take longer to stop than a maximum impending skid stop.)

Do you have tread on your tires?

Do you have rims? What are they made of?


Multiply everything together... divide by the thickness of your wallet.

Spend until you feel justified in your purchasing power.