Worn tie rod ends. Jack up the front of your vehicle and see if your front tires have some play horizontally. If they wobble horizontally then its likely tie rod ends and if they wobble vertically its your ball joints. Apparently it can be quite dangerous to drive like that. I have to replace mine in the morning.
The front wheels of a car can wobble because the car's suspension is not in proper alignment. The wheels may also wobble if the rim is bent or if the tire is improperly installed
There are no emergency brakes on the front wheels of vehicles.
It means your front tires need balancing
Front wheel shudder could come from worn tires, bad brakes, or worn front end components. Check all of these to find the cause of the shudder.
On most cars the handbrake is applied to the rear wheels only. The footbrake applies to both the front and back brakes, with a bais to the front to help avoid the rear wheels locking up under heavy braking.
no, just the wheels the brakes apply to, usually the front brakes
brakes on all 4 wheels
All modern mass-produced cars and light trucks DO have hydraulic brakes on the front and the rear wheels. Heavy trucks generally have air brakes on all the wheels. Maybe you are thinking of cars that have disk brakes on the front and drum brakes on the rear? On cars, these are both hydraulically operated using the same hydraulic (brake) fluid. In normal stopping situations, the front brakes do more work than the rear brakes. Maybe 70 or 80% of the braking is done by the front wheels (it depends on where the weight is in the car and how fast you stop). Disk brakes are a somewhat better brake for a car, but drum brakes are a little cheaper to manufacture. So, disk brakes are almost always used on the front wheels where the braking is more important. Drum brakes are used on the back of some cars to save money. Note that performance cars (sports cars) almost always have disk brakes on all of the wheels.
back wheels.
Your rotors are warped, replace them.
Primary brakes are situated at the front wheels and provide about 70% of a vehicle's braking power. Your secondary brakes are located at the rear wheels and only provide about 30% of a vehicle's braking power.
Metering valves are used in the automotive industry, it is a necessary part on autos that have disc brakes on the front wheels and drum brakes on the rear wheels.