Why do front brake pad wear quicker than rear?

you ever stubbed your toe and fell down after wards? its the same principal your body has a higher weight mass and when your lower body stopped because you caught your forward motion down low your heavier weight mass above the waist threw you over onto the ground where you used your hands and arms (and sometimes our face) to stop the forward momentum. The car will immediately throw forward on the suspension when you step on the brakes. Itr will keep most of the weight forward until you slow down enough that the suspension of the springs on the car can pull it back into its normal position. If you use your brakes easy you can keep the car very stable normally but once above a certain speed if you need to stop fast you cannot get away from the weight getting thrown forward by the weight of the car when you apply the brakes.

The reason it seems even to you is there is a proportioning valve that divides the brake force 60 to 70 percent to the front and 30 or 40 to the rear. otherwise if it were 50 50 the rear brakes would lock up and slide every time in the dry roads and be impossible to stop on wet roads. We need the brake bias to offset the fronts doing more of the work which is why they wear a lot faster.

The brakes are designed to take advantage of the weight down force on the front tires while stopping. This means the front tires have more weight holding the tires to the road than the rears as you can see every time a car brakes hard the front of the vehicle nose dives. Seeing there would be no benefit designing the rear brakes to brake at a higher percentage rate because the tires would lose traction on the road the front brakes are larger and have most of the braking power. Brakes that are designed to do more work wear out faster. Plain and simple, they were made this way on purpose!

If you noticed that when a car stops, that objects in the car keep moving forward. Well so does the body of the car. When this happens the car shifts the weight to the front end and the rear end becomes what some call "unloaded". There is little of no weight on the rear tires- the exact amount of weight shift depends on how much the brakes are applied and the velocity of travel.

There are several ways this is taken into account in brakes, size of braking area (pads), diameter of the brake surface, proportioning valves and/of size of the brake pistons.

The master cylinder is designed to put more hydraulic pressure on the front pads to take advantage of the fact they have the most weight during braking. You have to do it that way to keep the rear wheels from locking up a lot sooner than the front.

All cars are set up to proportion the pressure to front and back pads so the wheels all lock up at about the same time.

When you brake, the car's weight shifts forward.

Ever see a car panic stop and the nose dives down?

This puts more load on the front wheels/brakes.

80% of stopping power is on the front brakes and 20% is on the rear.

because the front brakes is what slows you down and the back brakes is what stops you ! the front carries most of the braking !

yes front brakes take the load first otherwise you would skid all over the shop