Question about Mercedes-Benz 300-Class

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E-300 30k miles needs new brake pads and rotors on front . Is this normal to have to replace both bads and rotors after only 30k niles

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  • gerard kerton Aug 03, 2010

    What do you mean by rotors.

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Normally, the Rotor has only 30K then it can be resurfaced. If it has a deep grove at the edge and the estimated thickness after resurfaced not meeting spec then it should be replaced.

Posted on Aug 11, 2010

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2 Answers

With just over 50,000 miles on my 2008 Jeep Wrangler (mostly all highway) Both of my rear pads and rotors need to be replaced.. Does anyone know if this is normal? My front pads and rotors are...


The front brakes are good at 30000 mile intervals ,because they do most of the stopping power. 50 to 60000 miles is about normal on the rear brakes. The most common ailment with rear brakes is the emergency brake not releasing. The cables for the emergency brake run under the jeep ,along the frame and rust keeps them from releasing

Mar 07, 2011 | 2008 Jeep Wrangler

5 Answers

Need to repace front brakes and rotors, the car only has 31000 miles on it!!


The brake pads are well within a good long life. Brake wear life depends on a number of factors, the most significant is the driver. Most people feel that they are easy on brakes and that is usually not true...

Rotors are damaged by: normal wear; waiting too long for pads and damage from metal to metal contact; and HEAT. Heat damages rotors and causes them to warp. Cars now days have less material on the rotors and therefore they have shorter life.

On some vehicles it is only slightly more to replace rotors, versus resurfacing them. A resurfaced rotor has less material, so warping happens faster.....Some shops just routinely replace rotors, rather than resurface for just this reason.

Other shops routinely replace calipers, which can be agrued either way, but a caliper that hangs slightly will cause rotor warp. My preference is to replace calipers when they need it, by leaking or binding....

Mar 07, 2011 | 2007 Buick LaCrosse CXL Sedan

1 Answer

How can I change the rotors and brakes on a 2006 Cadillac?


Front brake
Step 1: Identify Front Disc Brake Components
brake_pads_rotor.jpg
Front Wheel Drive Brake Assembly
Most front disc brake components include: brake rotor, brake pads, brake caliper, caliper mount and brake flex hose. Brake service usual occurs between 20,000 and 40,000 miles depending on driver habits, road conditions and brake pad/ rotor materials used.
Step 2: Remove Brake Caliper to Replace Pads
brake_pad_set.jpg
Removing Brake Caliper Mounting Bolts
Locate primary caliper mounting bolts; apply wrench pressure counter-clockwise (When looking at the head of the bolt) to remove the bolts, upper and lower. Make sure the bolt threads are in good shape and replace if necessary.
Step 3: Remove Front Brake Caliper
remove_brake_caliper.jpg
Remove Front Brake Caliper
After removing the primary caliper mounting bolts lift the brake caliper off of the rotor and then tie or secure to the side, being careful not to bend or kink the brake caliper flex hose. Thoroughly inspect brake caliper and brake hoses for leakage, cracks or chaffing and replace as needed. Next remove the brake pads (If not mounted in the caliper) and secondary caliper mounting bolts. Notice how great protective gloves work, most technicians use them on the job today.
Step 4: Remove Brake Pads
remove_brake_pads.jpg
Remove Front Brake Pads
Once the brake pads have been removed, make sure if there is anti rattle hardware to transfer to the new brake pads. Some brake pad manufacturers will include the proper lube (Caliper slides) and anti-rattle hardware to ensure proper performance of their product.
Step 5: Remove Caliper Mount
remove_brake_pads_holder.jpg
Remove Caliper Mount Bracket
Finish removing secondary caliper mount bolts and remove caliper mount. Note: clean and lube caliper slides and pad friction surfaces of all foreign material or build-up.
Step 6: Remove Brake Rotor
brake_rotor.jpg
Remove Brake Rotor
With the caliper mount out of the way you can now remove the brake rotor. Sometimes it can get stuck so you may need to tap it with a hammer or use penetrating oil to free it up. Some manufacturers use small screws to hold the rotor on as well. Clean and inspect wheel studs, replace if any are damaged. Also clean bearing hub rotor mount surface to ensure the proper mounting of the new brake rotor. Inspect the ABS sensor wheel for cracks or damage and replace as needed.
Step 7: Depressing the Brake Caliper
compress_caliper.jpg
Resetting Brake Caliper
To install the new brake pads you must retract the brake caliper piston. Remove the master cylinder lid or open the brake caliper bleeder screw to allow excess brake fluid to be released if necessary. Install C clamp tool and gently tighten clamp until caliper piston is fully depressed. Note: use old brake pad to protect the caliper piston. Close the bleeders once the piston is retracted completely
Step 8: Installing New Brake Rotor
new_brake_rotor.jpg
Install Brake Rotor
Install new brake rotor, the new rotor is manufactured with a protective film over the rotor to keep it from rusting, remove protective film with brake cleaner before installing; also after the brake job is complete you may experience a small amount of smoke from the rotor when first used. This is normal and will go away after the first couple of uses.
Step 9: Installing New Front Brake Pads
new_brake_pads.jpg
Installing New Brake Pads
Reinstall the front brake caliper mount, and then install front brake pads. Make sure the pads are seated properly in the caliper mount; it must be a close fit to work properly..
Step 10: Reinstall Front Brake Caliper
front_brake_rotor_pads.jpg
Re-Install front Bake Caliper
Reinstall front brake caliper and reinstall caliper-mounting bolts, recheck all mounts and mounting bolts. Check the caliper slides to be sure there is no bind and that the caliper moves freely back and forth on the caliper slides. Bleed brake system per manufacturer's specifications to relieve any air trapped in the system. Before driving the vehicle, push the brake pedal down and let it up slowly, repeat until normal brake pedal operation resumes, this operation is forcing the brake pads to travel to the brake rotors.

Dec 18, 2010 | 2006 Cadillac STS

1 Answer

Recently had front & rear brakes replaced along with a new rear axle. Vehicle has 114,000 miles. The brakes shudder slightly with normal braking + some quivering of the steering wheel. With hard...


Its a good idea to turn your rotors if your putting on new pads so that you get a good seat.  The steering wheel vibration may be your new pads wearing in and trying to find a good seat.  Give it another 500 miles for break in period and if you still get the problem, then replace the pads with better ones and check to see if your rotors are not warped.  Your pads will never seat correctly if your rotors are warped and make sure you use plenty of that shim goop they give you in the package before putting on the pads.

Nov 19, 2009 | 1999 Ford Econoline

3 Answers

Rear brake pads wear out every 30000 miles on 2002 3/4 tod hd , rotors are pitted bad


That's to be expected and is completely normal.

Rear brake shoes as fitted to drum brakes can typically last up to 60k miles with periodic adjustments, but you have rear disc brakes and the shoes will typically last half of that.

Also, modern brake pads no longer contain asbestos and are now made using harder metallic compounds; the direct result is that brake discs (US=rotors) are also considered to be consumable items as they are worn down by the harder pads. It's not unusual to have to replace front discs every other pad change and rear ones with every pad change; in both cases the mileage will typically be around 30k miles on most models.

Nov 15, 2009 | 2002 GMC Sierra 2500HD

3 Answers

325 ci brake rotors have been replaced 4 times in 6 years


BMW rotors are not known for lasting very much more than 30-45k miles. When the brakes are inspected, they measure the pads using a special tool threw the outer brake pad. Min spec is 3mm. When the pads are replaced, they measure the thickness of the rotors. The rotor spec is stamped on the rotor. if they are under that spec, they recommend replacing them as well. Next time you bring it in for service, just ask them to measure the rotor thinkness, (its not a huge task, all they have to do is take the wheels off). But more often than not, the rotors wear just as fast as the pads.

Feb 19, 2009 | 2003 BMW 325

2 Answers

2005 Dodge Durango Front Brake Squeal


Did you buy factory pads or get cheap aftermarket pads? If aftermarket did you get the ceramic? The cheap aftermarket ones tend to squeal pretty bad. Like the last comment on here, you should have your rotors turned whenever you change the pads.

Jan 13, 2009 | 2005 Dodge Durango

2 Answers

2006 Dodge Charger


I have a Dodge Charger r/t bought it new. I have 46,000 miles on it. Notice it is using oil and at idle there is a pinging noise.

Aug 19, 2008 | 2006 Dodge Charger

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