do i really have to change the rotors if i change the front brake pads on my 05 m3?

55

Asked by Apr 02, 2012 at 07:18 PM about the BMW M3

Question type: Maintenance & Repair

i need brake pads, my indicator just popped up. but shops are telling me that i need to replace my rotors also because the is no specs on cutting rotors on bmw's anylonger. the rotors are fine, i havent wore out my pads completly yet.

16 Answers

1,425

I strongly recommend it. If you dont you will end up with squeeks. The pads need a fresh surface to seat properly. These rotors are considered throw away rotors because they are only designed to last though a specific amount of use.

4 of 4 people found this helpful.
Best Answer Mark helpful
55

Thanks dude! Guess im buying rotors, lol

1 of 1 people found this helpful.
1,425

No problem. Look at performance aftermarket. Most times it works out more affordable than dealer. Dinan is a wonderful company with great parts. they are pricey though. Good luck

1 of 1 people found this helpful.
45

Check out Pelicanparts.com or Rockauto.com, great prices on bmw parts.

1 of 1 people found this helpful.
7,165

would recommend replacing the rotors.... BMW uses all ceramic pads from the factory, which are hard as rocks.

1 of 1 people found this helpful.
1,705

Do also realise that the M3 runs a duel material disk, Steel friction area with an Alloy center for heat dispersion and unsprung weight, ensure your aftermaket units will keep to this if you drive hard, also they are left and right directional disks on the M3 for further cooling and efficiency. just FYI.

1 of 1 people found this helpful.
55

thanks all. it's my 1st m3. coming from mustangs and volkswagens all these little facts about the m3 are new to me. thanks again. shopping for parts as we speak.

5

Front minimum is 26.4mm Rear minimum 18.4mm If you have the 19" wheels and the ZHP package with floating rotors you either need to replace them, or find somewhere that can turn rotors on the car or has the equipment to turn them off-car. Otherwise there is no reason you can't just have the rotors turned as long as they are above minimum thickness. And the minimum specs are stamped on the rotor (for OEM).

55

really? i knew there had to me a way!

1,705

BMW says not to machine M car brakes, and most brake shops wont machine drilled disks because they destroy the grinding pin on the brake lathe. (not a cheap tool)

1 of 1 people found this helpful.
5

Stock M brakes aren't drilled on the 05. The ZHP package brakes are, but they are also floating so they are a different beast entirely.

335

They aren't drilled, but BMW will tell you not to have them cut/turned because of the steel they are made of. You can read up on people having problems with them after the cutting, ether lots of noise or not the same stopping power they had, it has nothing to do with the pads being ceramic, you may get more then one use out of them as long as they are with in spec, but if i was you i could go on ECS and get a rotor pad combo from them and save some money.

1 of 1 people found this helpful.
1,705

I am yet to see an M3 e46 or E90 that doesnt have cross drilled disks. (approx my2000 - present)

335

http://www.bmwpartsweb.com/Part-Number/Product- Detail__34112229529-OEM-ID-A177134.aspx without Competition Package they are blanks, if you get the comp package they will come Cross drilled, thats on that body. And its the same way for each M3 you have to order the car with cross drilled, but you dont need to keep them.

1,705

i guess my local market (Australia) gets the Euro spec because this is the disks we use - http://www.bmwpartsweb.com/Part- Number/Product-Detail__34112282801_O-prd-E_6BB4EABD.aspx

335

O ok i see ya the Euro spec ones are a bit diff

Your Answer

M3

Looking for a Used M3 in your area?

CarGurus has 1,946 nationwide M3 listings starting at $5,999.

ZIP:

BMW M3 Experts

  • #1
    Tom Demyan
    Reputation
    170
  • #2
    Mike Zaba
    Reputation
    70
  • #3
    Js08016
    Reputation
    50
View All

Related Models For Sale

Used BMW 3 Series
1,123 Great Deals out of 33,114 listings starting at $1,428
Used BMW M5
11 Great Deals out of 547 listings starting at $11,900
Used BMW M4
3 Great Deals out of 1,292 listings starting at $41,339
Used Ford Mustang
450 Great Deals out of 42,576 listings starting at $1,488
Used Mercedes-Benz C-Class
865 Great Deals out of 26,067 listings starting at $1,500
Used Porsche 911
126 Great Deals out of 5,277 listings starting at $12,984
Used BMW M6
13 Great Deals out of 528 listings starting at $14,999
Used BMW 5 Series
470 Great Deals out of 16,127 listings starting at $1,032
Used Chevrolet Corvette
134 Great Deals out of 16,194 listings starting at $3,000
Used BMW M2
218 listings starting at $46,999
Used Chevrolet Camaro
534 Great Deals out of 31,192 listings starting at $1,450
Used Nissan GT-R
4 Great Deals out of 531 listings starting at $55,000
Used Audi S4
38 Great Deals out of 1,603 listings starting at $2,995
Used Dodge Charger
439 Great Deals out of 35,097 listings starting at $2,000
Used Dodge Challenger
255 Great Deals out of 25,622 listings starting at $6,972

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.