New brake design? Cannot replace just pads?

[Willys41]

Terafex Delta are the best brakes that I have found for the Wrangler and any and all rotors will wrap under the condition we put the brake though
There is a lot more to the delta brakes then just the rotors and if you can't figure what that is you have no business lecturing to me about brakes
I am not going to argue with you or any buddy else
I have done thousands of brake jobs and have seen it all. How many have you done
On average I did about one brake job a day for the last 30 years. You do the math

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[Willys41]

What Causes Brake Rotors to Warp?
Posted on 7/27/2022

Brake rotors, also called brake discs, are essential to your vehicle's braking system. The rotors are attached to your vehicle's wheels and spin along with them. When you press on the brake pedal, brake pads clamp down on the rotor to create friction that slows the wheel and brings your car to a stop.
Over time, brake rotors can become warped or damaged from excessive heat and friction. Warped brake rotors can cause your vehicle to vibrate when you brake and may decrease braking performance. In some cases, warped brake rotors can also cause premature wear of your vehicle's brake pads. If you suspect your brake rotors may be warped, it's essential to have them checked by a qualified mechanic as soon as possible.
What Causes Brake Rotors to Warp?
There are several reasons why brake rotors can become warped. The following are the most common causes:
1. Excessive Heat
One of the most common causes of warped brake rotors is excessive heat. Every time you press the brake pedal, the brake pads clamp down on the rotor to create friction. This friction generates heat, which can cause the rotor to warp if it becomes too hot.
2. Hard Braking
Another common cause of warped brake rotors is hard braking. If you frequently brake hard or drive in stop-and-go traffic, your brake rotors may become warped from the excessive heat and friction.
3. Improper Maintenance
Improper maintenance is another common cause of warped brake rotors. It's essential to regularly check your vehicle's brake pads and Rotors for wear. If the brake pads are worn too thin, they may not be able to dissipate heat properly, which can lead to warped rotors. In addition, if you don't regularly clean your vehicle's brake system, brake fluid and other debris can build up on the rotor and cause it to warp.
4. Driving on Rough Roads
Driving on rough roads can also cause your brake rotors to warp. Potholes, speed bumps, and other obstacles can stress the rotors and cause them to warp over time.
5. Manufacturing Defects
In some cases, brake rotors can warp due to manufacturing defects. If the rotors are not made correctly, they may be more susceptible to warping under heat and stress.

ALL BELOW CAN AND WILL APPLY TO 4X4s INCLUDING JEEP WRANGLER & GLADIATOR
Other causes of brake rotor warping include:
* Driving in mountainous terrain where you have to use your brakes frequently
* Towing a heavy trailer or load
* Frequent hard braking
* Riding the brake pedal (keeping your foot on the brake pedal for too long)
* Driving in stop-and-go traffic

* Not allowing enough time for your brakes to cool down after driving at high speeds
If your brakes are vibrating when you press on the pedal, it's essential to have them checked as soon as possible. Warped brake rotors can decrease braking performance and cause premature wear of your vehicle's brake pads. If you suspect your brake rotors may be warped, we invite you to bring your vehicle to Lawrenceville Auto Center today for an inspection.

 

[GATORB8]

What Causes Brake Rotors to Warp?
Posted on 7/27/2022

Brake rotors, also called brake discs, are essential to your vehicle's braking system. The rotors are attached to your vehicle's wheels and spin along with them. When you press on the brake pedal, brake pads clamp down on the rotor to create friction that slows the wheel and brings your car to a stop.
Over time, brake rotors can become warped or damaged from excessive heat and friction. Warped brake rotors can cause your vehicle to vibrate when you brake and may decrease braking performance. In some cases, warped brake rotors can also cause premature wear of your vehicle's brake pads. If you suspect your brake rotors may be warped, it's essential to have them checked by a qualified mechanic as soon as possible.
What Causes Brake Rotors to Warp?
There are several reasons why brake rotors can become warped. The following are the most common causes:
1. Excessive Heat
One of the most common causes of warped brake rotors is excessive heat. Every time you press the brake pedal, the brake pads clamp down on the rotor to create friction. This friction generates heat, which can cause the rotor to warp if it becomes too hot.
2. Hard Braking
Another common cause of warped brake rotors is hard braking. If you frequently brake hard or drive in stop-and-go traffic, your brake rotors may become warped from the excessive heat and friction.
3. Improper Maintenance
Improper maintenance is another common cause of warped brake rotors. It's essential to regularly check your vehicle's brake pads and Rotors for wear. If the brake pads are worn too thin, they may not be able to dissipate heat properly, which can lead to warped rotors. In addition, if you don't regularly clean your vehicle's brake system, brake fluid and other debris can build up on the rotor and cause it to warp.
4. Driving on Rough Roads
Driving on rough roads can also cause your brake rotors to warp. Potholes, speed bumps, and other obstacles can stress the rotors and cause them to warp over time.
5. Manufacturing Defects
In some cases, brake rotors can warp due to manufacturing defects. If the rotors are not made correctly, they may be more susceptible to warping under heat and stress.

ALL BELOW CAN AND WILL APPLY TO 4X4s INCLUDING JEEP WRANGLER & GLADIATOR
Other causes of brake rotor warping include:
* Driving in mountainous terrain where you have to use your brakes frequently
* Towing a heavy trailer or load
* Frequent hard braking
* Riding the brake pedal (keeping your foot on the brake pedal for too long)
* Driving in stop-and-go traffic

* Not allowing enough time for your brakes to cool down after driving at high speeds
If your brakes are vibrating when you press on the pedal, it's essential to have them checked as soon as possible. Warped brake rotors can decrease braking performance and cause premature wear of your vehicle's brake pads. If you suspect your brake rotors may be warped, we invite you to bring your vehicle to Lawrenceville Auto Center today for an inspection.

Actual warping is pretty rare, done some extremely hard and hot braking on the track, and pad transfer was always a bigger concern.
https://www.brembostoreusa.com/blog...U1xacFWYjU_jdbYnFdDkJiLtQ_nJns_UaAr14EALw_wcB

 

[roaniecowpony]

IMO, brake rotors warp due to residual internal stresses from the manufacturing process. These stresses occur when the castings cool. Virtually all cast rotors (and they are almost all cast iron) will have residual stresses after cooling from the casting process. Virtually all raw rotor castings will get stress relieved, which is a heating process. Some manufacturers may stress relieve more than once, usually after a heavy machining process, but before final light machining. Still, some castings may create stresses that are not relieved in the maker's processes. As was mentioned, heat from braking will stress relieve rotors and can/will warp the rotor in the process. Truing the rotor by turning it afterward will result in a rotor that is less likely to warp again, especially if the rotor is not subjected to higher heat than when it last warped.

 

[Willys41]

I have seen pad transfer a few time put mostly on street cars and truck brake pad disintegration from extreme over heating
Having machined thousands of rotors in my 30+ years new and used what I have seen on new rotors is not warpage put high and low spots in the middle of the rotor surface
Most put not all new rotors are machined on a Brake Rotor Grinder

I don't know why this happens put I see it time and time gain
Used rotors are mostly warped or machined incorrectly. Some so bad I can not machine it out
when machining any part your machine must be true and the part must be mounted as true as possible
GARBAGE IN GARBAGE OUT

 

[Willys41]

roaniecowpony
You are 100% correct

 

[roaniecowpony]

roaniecowpony
You are 100% correct

My education and past career was Manufacturing Engineering. My early career was in machining. I've worked in and owned machine shops. So, stress warping of parts is a familiar subject.

 

[pablo_max3045]

From the photos, the pads are only down like 40% at most, so there is no need to replace them or the pads.
I am certainly not a brake expert, but my understanding is that pads generally last 20 - 50k miles while rotors are about 25-55k miles.
Since they are not expensive, it makes sense just to swap out the rotors too given how easy it is to do.
There are plenty of youtube videos out there to show how to do the brakes on a wrangler. Watch and few and see if it is something you think you would be ok with. It's actually a lot easier then you'd think.

 

[GATORB8]

From the photos, the pads are only down like 40% at most, so there is no need to replace them or the pads.
I am certainly not a brake expert, but my understanding is that pads generally last 20 - 50k miles while rotors are about 25-55k miles.
Since they are not expensive, it makes sense just to swap out the rotors too given how easy it is to do.
There are plenty of youtube videos out there to show how to do the brakes on a wrangler. Watch and few and see if it is something you think you would be ok with. It's actually a lot easier then you'd think.

Pics aren't the OP's.

 

[Maverick909]

Good afternoon,

My 2018 JLUR needs new pads on the front. Just got a call from the dealership where they confirmed it is just the pads worn out and only the front. However, they are telling me that Jeep has come out with a new design so they will have to replace the pads and the rotors and want nearly $900 to do it (just the front).

Seems absolutely crazy right. So my question is if this is a real thing and I am essentially going to have to replace rotors as well because of this design change or if they are BS‘ing me. If the latter, would going to somewhere else that is not the dealership void any kind of warranty as that is why I use the dealership (have the extended MVP warranty).

Thanks in advance.

Mark

??? do it your self. Done in an hour

 

[jjvincent]

Just so all of you know, all new brake rotors (even the best) just warp. This is why when in the morning, you see this as the top posting for all forums. Even buying the best does not make this go away. As we all see, all new Jeeps have this problem even more than the death wobble or the 2.0 coolant leaks or even the 3.6l HX leaks.

So, the pulsating of the brakes has to deal with Jeeps and everyone else out there, that you need to break them in and then get them resurfaced. Someone prove me wrong but there are thousands of these rotor warping issues that have been front and center here. All Jeeps suffer from this as do everything else. Unless you buy the best brake system and get those rotors resurfaced, then you are living with a huge problem. I bet everyone here that has more than 5K on the odometer, suffer with pulsating brakes. I have seen it on this thread, it's the most reported issue. Not even on the level of the death wobble.

So, get your Jeep in and get the rotors machined. Stand right next to the mechanic and make sure they do it right. As we all know, those guys are grease monkeys. They are dumb and do not know what they are doing.

I'm happy we got the massive brake pulsation problem solved. Now we know that buying a $2600 set of brakes will require truing up the rotors but at 3K total bill, it's worth it.

 

[Willys41]

jjvincent
I am glad that someone else besides me have have pointed this out
Thanks

 

[Packnbeer]

those pads are like new. thats crazy

 

[The Last Cowboy]

Brake threads are getting to be as bad as oil threads.

 

[kah.mun.rah]

If you wore the pads down to the point that they were cutting into the rotors and the grooves are too deep/rotors to thin to machine, then yes, you will need to replace both the pads and the rotors. If you don't trust them, then a second opinion at a brake shop is a good idea.

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