How to measure and inspect the brake disc diameter on the BMW 335i?

Measure the brake disc diameter on the vehicle and check it against the corresponding brake disc specifications for the front or rear brakes. Additional application information is available through parts data and the authorized BMW dealer parts department. Machine or replace brake discs in pairs per axle. Begin by raising the car and supporting it safely, then remove the wheels. Next, remove the brake caliper carrier bolts and suspend the brake caliper from the chassis using stiff wire, ensuring the hydraulic brake line remains connected. Remove the brake disc mounting screw and take off the disc, inspecting it for cracks, signs of overheating, and scoring. The minimum allowable thickness is stamped on the disc hub. Measure the disc braking surface with a micrometer at eight to ten different points, using the smallest measurement for comparison against the specifications. If the disc does not meet minimum thickness requirements or is damaged, it should be replaced. Clean the disc with brake cleaner before installation, and when installing new rear brake discs, adjust the parking brake accordingly.

Genuine BMW 335i Brake Disc

Disc Rotor

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9 Brake Discs found

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BMW 335i Ventilated Brake Disc
Part Number: 34216864899
$110.24 MSRP: $170.41
You Save: $60.17 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake disc, ventilated; Rotor
- Replaces: 34-21-6-792-233
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i Replacement Front Brake Discs
Part Number: 34106797603
$383.90 MSRP: $498.00
You Save: $114.10 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake disc, ventilated, w/holes, front; Rotor
- Position: Front
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i M Performance Rear Brake Discs
Part Number: 34206797600
$255.93 MSRP: $332.00
You Save: $76.07 (23%)
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Product Specifications
- Other Name: Brake disc, ventilated, w/holes, rear; Rotor
- Position: Rear
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i Ventilated Brake Disc
Part Number: 34216855004
$115.20 MSRP: $178.07
You Save: $62.87 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake disc, ventilated; Rotor
- Replaces: 34-21-6-764-655
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2013 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Brake Disc, Lightweight, Ventilated
Part Number: 34116792223
$175.10 MSRP: $275.26
You Save: $100.16 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rotor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i Brake Disc, Ventilated, W/Holes, Front
Part Number: 34106797602
$319.92 MSRP: $415.00
You Save: $95.08 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rotor
- Position: Front
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i Ventilated Brake Disc
Part Number: 34116855000
$144.45 MSRP: $227.07
You Save: $82.62 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake disc, ventilated; Rotor
- Replaces: 34-11-6-770-729
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2013 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Brake Disc, Lightweight, Ventilated
Part Number: 34206797607
$176.16 MSRP: $276.93
You Save: $100.77 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 34206894382
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)
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BMW 335i Brake Disc, Lightweight, Ventilated
Part Number: 34106797606
$209.63 MSRP: $329.54
You Save: $119.91 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Rotor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2015 BMW 335i | Sedan(F30)

BMW 335i Brake Disc

The BMW 335i Brake Disc provides reliable stopping power by applying pads against a metal rotor, which generates friction to work on slowing each wheel. Compared with the old drum setup that was once prevalent on cars, the Brake Disc operates in the open air, allowing heat to escape rapidly and reducing the problems of fade, pull, and unpredictable pedaling feel. Every BMW 335i since launch has employed vented Brake Disc rotors with internal cooling fins, followed by performance versions of the 335i with drilled or slotted faces to sweep away gas and water for even steadier braking on spirited drives. All styles remain self-adjusting due to the gap between pads and Brake Disc, which nearly remains constant, thus allowing the driver a firm pedal and straight-line stops. While early models were of a one-piece cast iron design, some recent packages switched to a two-piece design with an aluminum hub and floating friction ring to reduce unsprung weight and resist warping under repeated hard use. Regardless of version, each BMW 335i Brake Disc is easy to inspect without having to remove any further housings, which makes routine checks fast and ensures the powerful engines of the BMW 335i can be reined in with confidence.

If you are looking for OEM BMW 335i Brake Disc, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 335i Brake Disc that come backed by the manufacturer's warranty.

BMW 335i Brake Disc Parts Questions & Experts Answers

Ventilated Brake Disc
34216855004
Q:
How to measure and inspect the brake disc diameter on the BMW 335i?
Posted by Mikhail K.
A:
Measure the brake disc diameter on the vehicle and check it against the corresponding brake disc specifications for the front or rear brakes. Additional application information is available through parts data and the authorized BMW dealer parts department. Machine or replace brake discs in pairs per axle. Begin by raising the car and supporting it safely, then remove the wheels. Next, remove the Brake Caliper carrier bolts and suspend the brake caliper from the chassis using stiff wire, ensuring the hydraulic brake line remains connected. Remove the brake disc mounting screw and take off the disc, inspecting it for cracks, signs of overheating, and scoring. The minimum allowable thickness is stamped on the disc hub. Measure the disc braking surface with a micrometer at eight to ten different points, using the smallest measurement for comparison against the specifications. If the disc does not meet minimum thickness requirements or is damaged, it should be replaced. Clean the disc with brake cleaner before installation, and when installing new rear brake discs, adjust the parking brake accordingly.
Answered by BMW Parts Specialist Javier / Apr 22, 2023

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