M Sport Brakes - G20, G22
 
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M Sport Brakes - G20, G22

Revised 06/20/2022
This page is evolving as we continue to find exceptions and changes made in the middle of production.


The brake options on the G20 3-series and G22 4-series are much less confusing than their predecessors but there is still some confusion that needs clearing up. Luckily, it seems internet forums have already caught on to the differences and we included links to them below.

There are five factory brake options offered on G20 3-series and G22 4-series: 30i standard, 30i M Sport, M40i standard, Motorsport Engineering, and M Performance.


330i/430i Standard Brakes
 

Base model brakes with single-piston sliding calipers front and rear. The pads look familiar since this a traditional caliper type.
Front Rotor: 330x24mm, 1-piece, blank face rotors
Rear Rotor: 330x20mm, 1-piece, blank face rotors
Front Caliper: 1-piston, sliding, grey/unfinished
Rear Caliper: 1-piston, sliding, grey/unfinished



330i/430i M Sport Brakes
 

If the M Sport package was selected at the time of ordering the brakes were upgraded to M340i/M440i specs. See below.



M340i/M440i Standard Brakes (M Sport)
 

As a full M Sport model the M340i and M440i received appropriate M Sport brake upgrades. These are Brembo 4-piston fixed calipers in the front and single-piston sliding calipers in the rear. These were offered in either blue or red color. The M Sport pads are unique to match the size of the M Sport 348mm rotor. The front pads measure 125.8 x 94.7mm.
Front Rotor: 348x36mm, 2-piece, blank face rotors
Rear Rotor: 345x24mm, 2-piece, blank face rotors
Front Caliper: 4-piston, fixed, blue or red
Rear Caliper: 1-piston, sliding, blue or red



M340i/M440i Motorsport Engineering/Track Package Option
 

In the BMW parts diagrams there is a listing for the "Motorsport Engineering" optional brakes. It's option code 033 (aka S033T or 033T or ZTK). We think this is a rare option and may not be offered in all markets. It was not offered for 330i/430i. The rotor size was increased to 374mm and the fixed caliper was changed for the extra 26mm of rotor diameter. Although the calipers look almost identical - and share some of the same components - they are slightly different. The pads are also different with the larger brakes getting a larger pad (127.7 x 117.4mm). The rear caliper remained a sliding single-piston design. These calipers were also offered as blue or red color. 19" wheels are required.
Front Rotor: 374x36mm, 2-piece, blank face rotors
Rear Rotor: 345x24mm, 2-piece, blank face rotors
Front Caliper: 4-piston, fixed, blue or red
Rear Caliper: 1-piston, sliding, blue or red



M Performance Accessory Brakes (all models)
 

Available from the Accessories catalog, the M Performance brakes are a dealer-installed option. These match the specs of the Motorsport Engineering brakes but were only offered in the red color. The pads are the same as the ZTK track brakes. 19" wheels are required.
Front Rotor: 374x36mm, 2-piece, dimpled & slotted rotors
Rear Rotor: 345x24mm, 2-piece, dimpled & slotted rotors
Front Caliper: 4-piston, fixed, red
Rear Caliper: 1-piston, sliding, red



How To Tell
You can't tell which brakes you have by the color. Just because you have red calipers does not mean you have an upgraded brake kit.
You can't tell which brakes you have by the caliper - they are extremely similar in appearance.
The best way we have found so far is to measure from the exact middle of your wheel center cap to the outer edge of your brake rotor. Over 7 inches is the 374mm rotor; under 7 inches is the 348mm rotor.
If you have 18" wheels you definitely do not have the larger brakes.
 

Checking size on G20/G22 brakes. Click for larger.




Read More
Need help identifying which brakes I have. (g20.bimmerpost)
The M340i's ZTK Cooling and HP Tire Package is impressive (g20.bimmerpost)
New Track Package for the M340i in Canada (g20.bimmerpost)



Shop G20 / G22 Brake Parts:
Rear-Brake-Rotor-Zimmermann-F10-F13-34216775289-im-tn.jpg

Front Brake Rotor, Zimmermann Coated - G20 330i, X3/X4 30i, Z4 30i

German-made, OEM-type replacement rotor with phosphate coating

Price: $134.99

197.11
View Product
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Front Brake Pad Set, OEM - G42, G20, G22/G26, G26, G01 X3, G02 X4, G29 Z4 M40i

OEM brake pads for original braking performance on standard brakes (348mm). Replaces BMW part #34116889570.

Price: $253.99

380.85
View Product
Zimmermann-Front-Left-Brake-Rotor-G20-34116860911-wp-tn.jpg

Front Left Brake Rotor, Zimmermann Coated - G20 G01 G02 G05 G29

German-made, OEM-type replacement rotor with phosphate coating

Price: $149.99

258.75
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Front Right Brake Rotor, Zimmermann Coated - G20 M340i, G01, G02, G05, G29

German-made, OEM-type replacement rotor with phosphate coating

Price: $149.99

258.75
View Product
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Front Brake Pad Set, OEM- G20 G22/G26 G23 G30 G12 G15 G05

OEM Ate brand set of mildly aggressive M Sport brake pads. Direct replacement for BMW part #34106888459.

Price: $259.40

380.85
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Front Left Dimpled Brake Rotor, M Performance - G20 330i/M340i, G22/G26 430i/M440i

Front rotor used in M Performance BBK. Replaces BMW #34106895647.

Price: $454.95

512.00
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M-Performance-Big-Brake-Kit-G20-330i-M340i-34112450161-press-close-tn.jpg

Front Right Dimpled Brake Rotor, M Performance - G20 330i/M340i, G22/G26 430i/M440i

Front rotor used in M Performance BBK. Replaces BMW #34106895648.

Price: $454.95

512.00
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Front Brake Pad Set, BMW - G42 M240i, G20 M340i, G22/G26 M440i, G30, G12, G15, G05 X5

Genuine BMW brake pads for original braking performance with red or blue M Sport calipers

Price: $281.16

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