moondance

There is some play in my front end when I move the tires while jacked up. My question is how much is too much? There is no clunking noise or anything while driving or turning the wheel. The play is what I would call slight or some but not where the tire flops around or nothing. Its just a bit of wiggle. So if someone could say how much is too much to where it could break or be unsafe please inform. Thanks