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

45

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

1,175

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 out of 4 people think this is helpful.
Best Answer
45

Thanks dude! Guess im buying rotors, lol

1,175

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 out of 1 people think this is helpful.
45

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

1 out of 1 people think this is helpful.
6,275

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

1 out of 1 people think this is helpful.
1,435

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 out of 1 people think this is helpful.
45

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).

45

really? i knew there had to me a way!

1,435

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)

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.

295

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.

1,435

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

295

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.

1,435

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

295

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

Your Answer

Add photo

Related Questions

M3

Looking for a Used M3 in your area?

CarGurus has 2,183 nationwide M3 listings starting at $3,495.

ZIP:

Search BMW M3 Questions

BMW M3 Experts

#1 Tom Demyan
Tom Demyan
Reputation 160
#2 Mike Zaba
Mike Zaba
Reputation 70
#3 Js08016
Js08016
Reputation 50
View All

Related Models For Sale

Used BMW 3 Series
1,781 Great Deals out of 40,585 listings starting at $1,350
Used BMW M5
43 Great Deals out of 630 listings starting at $7,990
Used BMW M4
19 Great Deals out of 882 listings starting at $49,854
Used BMW M6
14 Great Deals out of 638 listings starting at $13,400
Used Mercedes-Benz C-Class
931 Great Deals out of 32,459 listings starting at $2,497
Used BMW 5 Series
643 Great Deals out of 17,675 listings starting at $1,500
Used Ford Mustang
694 Great Deals out of 38,146 listings starting at $1,750
Used Porsche 911
138 Great Deals out of 4,432 listings starting at $10,950
Used Chevrolet Corvette
360 Great Deals out of 20,212 listings starting at $3,688
Used Audi S4
46 Great Deals out of 894 listings starting at $3,900
Used Nissan GT-R
568 listings starting at $42,900
Used BMW M2
3 Great Deals out of 97 listings starting at $52,495
Used Chevrolet Camaro
646 Great Deals out of 39,146 listings starting at $2,995
Used Subaru Impreza WRX STi
31 Great Deals out of 648 listings starting at $8,500
Used Mitsubishi Lancer Evolution
15 Great Deals out of 704 listings starting at $14,977