Vibration of the tire is caused by a uniformity parameter called "variation of radial force". Usually a vehicle's steering wheel will vibrate (called torsional nimble) at a certain speed. This vibration is caused by the harmonics of this radial force. Picture the side view of a tire with different size springs within it. The force of these springs cause a distortion of this force and you feel this distortion in the steering wheel.
High speed vibration is often an indication of a wheel that is out of balance or a bent rim. It can also be a bent driveshaft or bad U-joint. Vibration when you brake at high speed is almost always a warped rotor on the disk brakes.
Your tires need to be "high speed" balanced.
well... there are many different causes for vibrations. The most common cause for steering wheel vibration at high speed is poor wheel alignment.
Because the front rotors are warped. You might want to replace the rotors or resurface it.
It could be a shifted belt in one of the tires.
wheel balance is out.if it jerks alot at high speeds possibly a tire seperation.if those two possibilities check out then check the toe angle of the front suspension.
im guessing it has something to do with velocity and road conditions. yet again, if i'd imagine that a steering wheel shouldn't shake.... that can't be good.
Bent rim. You may rotate it to a rear wheel to reduce or eliminate wobble.
The tires are out of balance...may need tires, or rim(s) are bent
This can be a warped rotor or tire out of balance. If it only happens when braking it is a warped rotor.
* Smaller Turning Radius * Better Straight Line Stability * Better High Speed Maneovers * Improved Corning Performance * Improved Steering Response
The power steering system works on high pressure and at idle the pump does not turn fast enough to provide full assist. It requires a higher engine rpm.