so i swapped out my pads and checked my rotors, they look spec to me. still however, i have a shake in my front end that goes away after about 45 mph. its more prominent during braking so possibly a warped rotor? just wondering if there are an other small things to check before i pay for a new rotor.

 

Could be a warped disc, but you usually get a "pulse" coming the the break lever, also a bit of noise as the disc goes through the rotor. Have you checked the play in your steering head bearings? that can give a similar scenario.

 

Bent/damaged wheel, bad tire or unbalanced tire? A warped rotor should not create a shake while you are not braking unless it's so bad it's rubbing on the brake pads all the time and that doesn't sound like the case.

 

Check your bushings. I had a similar problem and new bushings fixed the problem.