Can bad front tires make your front end shake went you brake?

Can bad front tires make your front end shake went you brake?
Probably not, unless they are so bad that they are getting ready to collapse (which is unlikely). The shaking is probably caused by your brakes. Your brakes use either a disc or a drum that the brake pad pushes up against to slow the vehicle. The disc/drum can become slightly warped due to wear and heat (usually over time, but it can happen quickly if they are hot from being used and you slam on your brakes). So when the brake pad pushes up against the rotating disc/drum, the uneven surface causes a shaking effect as the pads grip more firmly to the high spots and less firmly to the low spots.Most auto shops can "turn" the disc/drum, which basically means they put it on a machine that grinds out the uneven surfaces. But if they are too badly damaged (or too worn), there may not be enough metal left to safely grind it back to a smooth state, so in this situation they would have to be replaced.