I just purchased an '06 g35 coupe and it has two different vibrations. I'm not sure if they're related or not.

First: under medium breaking the fron end vibrates and wobbles, and it kinda feels like the rotor may warped possibly.

Second: while heading striaght or slightly to the right theres a small vibration I can feel in the fornt end. its something you can just feel a little bit but you can definitly hear it. when I turn slightly to the left it goes completely away.

Any idea what the problem(s) may be, or what I should to to find out? Thanks for the help!

Is the warranty still valid? And did these not show up in the test drive?

I felt the braking vibration a little, but the other one didn't show up till about 150 miles into a 350mile drive. It has 46k miles on it, is that something that would be under warranty?

Warranty is through 60k. Go take it in and have the dealership look at it.

Could be brakes, but could be something else too.

I would take it to the dealer to have it checked and serviced under warranty. Suspension issues can stem from many things and diagnosing them is not always simple over the internet.

Check your tires. If they were driven with wrong alignment settings the tires can wear unevenly and cause vibrations.