take a look at your front rotors if the are not smooth then they need to be changed also check if they are warped that will be a little tricky if you dont know how. best bet is if you havent changed brakes in a while you should go ahead and do it. as far as the turning have your wheel bearings looked at and your tires if the bearing have failed they will cause a squeak or grind and if your tires are too big or out of round that will cause a vibration
If you suspect something, get them checked. If you get vibration while applying the brakes, get them checked. If you get grinding noise from the brakes, get them checked.
This is probably due to worn brake rotors on the brakes, if there is no vibration when driving then this will be the cause.
Steering wheel vibration when applying brakes is usually caused by warped disc brake rotors
engine problems not trans.
You need new brakes
Worn out brakes.
Brakes, wheel bearing.
The brake pads are worn out and need to be replaced. The grinding sound means your brakes are about to stop working.
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts. The vibration while driving is most likely a tire issue ie (out of balance, broken belt in tire, bent rim). Other possible causes are loose/worn suspension and/or steering parts.
Brakes
Your pads or discs are worn. The brakes will fail soon if not replaced.
your brakes are about to give out... you should go to wal-mart and have them replace them