Rear brakes shot

[Depotgeorge]

24 xlt 2.3 4x4 19,500 rear brakes are cooked already 3 mil left I have raised concerd at delaer for fast wear and they say they are made poorly. Meanwhile front are damn near perfect still. No towing or heavy leads just seems odd to have to replace the rears already. Also rear rotors are smooth no shine or hot spots no high lips. At 10k I did notice that all the slid bolts had almost no grease on them obviously lunes then up then. And now what pads to pick for the rear. Any suggestions.

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[Depotgeorge]

At 14k I was 5mil dealer said normal wear

 

[bigb]

I understand that the rear pads are now also the parking brakes, there are no longer parking brake shoes inside the rotors. I wonder if that has anything to do with it. I've never seen a vehicle where the rears wore out faster than the fronts.

 

[embedded rock]

Just remember to clean those caliper pistons before pushing them back in to accommodate new pads.

 

[TurboRanger]

Look at a new set of pads they might be 6 mm

 

[Hande]

It is a known issue, where brake caliper sliding pins get stuck or otherwise do not move freely. My RR had this problem as a new from factory, both front and rear.

Parking brake should not activate while the vehicle is moving, thus parking brake effect on pad life is unnoticeable.

 

[MGKRISTON]

Electronic brake force distribution is designed to apply the correct amount of braking force to each wheel to stop the vehicle during hard braking and emergency braking situations while maintaining stability control.

The Basics of Electronic Braking Force Distribution
When a vehicle brakes, the weight shifts forward, increasing the load on the front wheels while reducing it on the rear wheels. This weight transfer means that the front brakes must handle more braking force to stop the vehicle effectively, while the rear brakes require less force. If too much braking force is applied to the rear wheels, they can lock up, leading to skidding and loss of control. Conversely, insufficient braking force on the front wheels can reduce the overall stopping power of the vehicle.


Traditionally, vehicles used mechanical proportioning valves to regulate the amount of braking force sent to the rear wheels, reducing it as the load decreased. However, these systems were not adaptable to varying conditions, such as changes in load, road surface, or vehicle dynamics, and could not provide optimal braking performance in all scenarios. This is where Electronic Brake Force Distribution comes into play.

On older vehicles the front brakes perform about 70% to 80% of the braking power. That’s because the front weighs more than the rear (engine, transmission, driver, passengers, etc) and during hard stops vehicle weight transfers forward. Forward weight transfer causes nose dive which shifts even more weight onto the front brakes. The rear brakes simply prevented rear-end lift and aided in stability.

Mechanical proportioning valves reduced rear-end lift
Older vehicles also used a variable proportioning valve located in the rear of the vehicle. The valve was mounted on the rear axle, with a sensing rod connected to the body. During hard stops, as body weight shifted forward causing nose dive, the rear of the vehicle would rise. The sensing rod detected this rear end lift and moved a mechanical valve that diverted more brake fluid pressure to the rear brakes. The added pressure neutralized rear end lift and weigh transfer.

Automatic emergency braking (AEB) and stability control changed things
Late-model vehicles still carry more weight in the front of the vehicle. But they now have automatic emergency braking that’s designed to apply the brakes hard enough and rapidly enough to prevent a crash.

During an AEB event the hard braking and forward weight transfer can overwhelm to front brakes, causing the tires to lose traction, even with ABS assistance.

The most sensible way to reduce weight transfer and nose dive is to apply more rear braking power and apply it sooner in the process.

EBD senses hard braking and immediately distributes more braking power to the rear wheels to prevent rear-end lift, forward weight transfer, and nose dive. The result is more even braking from front to rear and faster stopping.

How EBD works
EBD uses the same wheel speed sensors as the ABS system. It also uses sensors to detect rapid deceleration and body weight shifts. To redistribute the braking force, the system uses Brake Force Modulators built into the ABS valve unit.

 

[bigb]

Electronic brake force distribution is designed to apply the correct amount of braking force to each wheel to stop the vehicle during hard braking and emergency braking situations while maintaining stability control.

The Basics of Electronic Braking Force Distribution
When a vehicle brakes, the weight shifts forward, increasing the load on the front wheels while reducing it on the rear wheels. This weight transfer means that the front brakes must handle more braking force to stop the vehicle effectively, while the rear brakes require less force. If too much braking force is applied to the rear wheels, they can lock up, leading to skidding and loss of control. Conversely, insufficient braking force on the front wheels can reduce the overall stopping power of the vehicle.


Traditionally, vehicles used mechanical proportioning valves to regulate the amount of braking force sent to the rear wheels, reducing it as the load decreased. However, these systems were not adaptable to varying conditions, such as changes in load, road surface, or vehicle dynamics, and could not provide optimal braking performance in all scenarios. This is where Electronic Brake Force Distribution comes into play.

On older vehicles the front brakes perform about 70% to 80% of the braking power. That’s because the front weighs more than the rear (engine, transmission, driver, passengers, etc) and during hard stops vehicle weight transfers forward. Forward weight transfer causes nose dive which shifts even more weight onto the front brakes. The rear brakes simply prevented rear-end lift and aided in stability.

Mechanical proportioning valves reduced rear-end lift
Older vehicles also used a variable proportioning valve located in the rear of the vehicle. The valve was mounted on the rear axle, with a sensing rod connected to the body. During hard stops, as body weight shifted forward causing nose dive, the rear of the vehicle would rise. The sensing rod detected this rear end lift and moved a mechanical valve that diverted more brake fluid pressure to the rear brakes. The added pressure neutralized rear end lift and weigh transfer.

Automatic emergency braking (AEB) and stability control changed things
Late-model vehicles still carry more weight in the front of the vehicle. But they now have automatic emergency braking that’s designed to apply the brakes hard enough and rapidly enough to prevent a crash.

During an AEB event the hard braking and forward weight transfer can overwhelm to front brakes, causing the tires to lose traction, even with ABS assistance.

The most sensible way to reduce weight transfer and nose dive is to apply more rear braking power and apply it sooner in the process.

EBD senses hard braking and immediately distributes more braking power to the rear wheels to prevent rear-end lift, forward weight transfer, and nose dive. The result is more even braking from front to rear and faster stopping.

How EBD works
EBD uses the same wheel speed sensors as the ABS system. It also uses sensors to detect rapid deceleration and body weight shifts. To redistribute the braking force, the system uses Brake Force Modulators built into the ABS valve unit.

Great info. After coming from a 2002 there's a lot I need to learn about these rolling computers.

 

[Alaska Steve]

I understand that the rear pads are now also the parking brakes, there are no longer parking brake shoes inside the rotors. I wonder if that has anything to do with it. I've never seen a vehicle where the rears wore out faster than the fronts.

My Jeep wrangler rear brakes wore twice as fast as the front brakes. It is a known wear pattern on the wrangler.

 

[bigb]

My Jeep wrangler rear brakes wore twice as fast as the front brakes. It is a known wear pattern on the wrangler.

What year?

 

[sikedsyko]

Yeah when I've seen rear brakes wear out faster than front, its usually from lots of intervention from the ABS/TCS systems.

 

[Alaska Steve]

What year?

2016 Wrangler Unlimited Rubicon. And I’ll also note that after the Jeep was lifted 4.5”, braking was significantly worse (35” tires instead of 32” tires). Because of that, I put a big brake kit on and eventually went up to 37” tires. The big brake kit (larger rotors and stock pads) resolved the braking issues of the lift and larger tires. The lift was done at ~32kmi, but the rear pads were shot at 25kmi. Over the time I owned the Jeep (84kmi), I replaced the rear pads three times and the front pads once.

 

[MGKRISTON]

Electronic brake force distribution is designed to apply the correct amount of braking force to each wheel to stop the vehicle during hard braking and emergency braking situations while maintaining stability control.

The Basics of Electronic Braking Force Distribution
When a vehicle brakes, the weight shifts forward, increasing the load on the front wheels while reducing it on the rear wheels. This weight transfer means that the front brakes must handle more braking force to stop the vehicle effectively, while the rear brakes require less force. If too much braking force is applied to the rear wheels, they can lock up, leading to skidding and loss of control. Conversely, insufficient braking force on the front wheels can reduce the overall stopping power of the vehicle.


Traditionally, vehicles used mechanical proportioning valves to regulate the amount of braking force sent to the rear wheels, reducing it as the load decreased. However, these systems were not adaptable to varying conditions, such as changes in load, road surface, or vehicle dynamics, and could not provide optimal braking performance in all scenarios. This is where Electronic Brake Force Distribution comes into play.

On older vehicles the front brakes perform about 70% to 80% of the braking power. That’s because the front weighs more than the rear (engine, transmission, driver, passengers, etc) and during hard stops vehicle weight transfers forward. Forward weight transfer causes nose dive which shifts even more weight onto the front brakes. The rear brakes simply prevented rear-end lift and aided in stability.

Mechanical proportioning valves reduced rear-end lift
Older vehicles also used a variable proportioning valve located in the rear of the vehicle. The valve was mounted on the rear axle, with a sensing rod connected to the body. During hard stops, as body weight shifted forward causing nose dive, the rear of the vehicle would rise. The sensing rod detected this rear end lift and moved a mechanical valve that diverted more brake fluid pressure to the rear brakes. The added pressure neutralized rear end lift and weigh transfer.

Automatic emergency braking (AEB) and stability control changed things
Late-model vehicles still carry more weight in the front of the vehicle. But they now have automatic emergency braking that’s designed to apply the brakes hard enough and rapidly enough to prevent a crash.

During an AEB event the hard braking and forward weight transfer can overwhelm to front brakes, causing the tires to lose traction, even with ABS assistance.

The most sensible way to reduce weight transfer and nose dive is to apply more rear braking power and apply it sooner in the process.

EBD senses hard braking and immediately distributes more braking power to the rear wheels to prevent rear-end lift, forward weight transfer, and nose dive. The result is more even braking from front to rear and faster stopping.

How EBD works
EBD uses the same wheel speed sensors as the ABS system. It also uses sensors to detect rapid deceleration and body weight shifts. To redistribute the braking force, the system uses Brake Force Modulators built into the ABS valve unit.

I would have hoped the dealership would have diagnosed it better for you.

 

[Depotgeorge]

What year?

24

 

[joordan]

I had to replace my rear pads (I did myself); front still has few mm

rear was worn out way more on the inner side than the outer

pretty bad pads overall, let’s see if the new non ford are better

first time I see rear pads worn out before the front where all the weight is, and where the big disks are

by the way, had to replace the front disk at the same time..bad vibration under breaking..

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