SKU: 38775480270

Front Brake Rotor Kit (345x28mm) - BMW E46 M3 / Z3 M / Z4 M

Sale price$258.75 Regular price$287.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Front Brake Rotor Kit (345x28mm) - BMW E46 M3 / Z3 M / Z4 MThese Rotors are side specific. This kit includes both Left & Right Rotors 34112282445 34112282446 The Zimmermann Formula Z brake disc was designed with the aim of teaming simple installation with optimum braking effect under high mechanical and thermal load. The compound brake disc developed by Zimmermann accommodates the increased demands incurred by engine tuning and optimized chassis structures. COAT Z Coat Z is a protective coating that prevents


These Rotors are side specific. This kit includes both Left & Right Rotors  34112282445/ 34112282446

The Zimmermann Formula Z brake disc was designed with the aim of teaming simple installation with optimum braking effect under high mechanical and thermal load.

The compound brake disc developed by Zimmermann accommodates the increased demands incurred by engine tuning and optimized chassis structures.

COAT-Z - Coat-Z is a protective coating that prevents rust and corrosion, extended rotor life and improved visual appearance. To improve the rust protection during storage and usage, Otto Zimmermann GmbH implements this new Coat-Z technology step by step in its production range. Beside the still optimum function of the brake disc, this coating ensures a consistent attractive appearance.

Formula Z - Bake Disc - The composite or compound brake disc named Formula Z is suitable for motorsport applications due to its special design. In contrast to the fully cast-iron brake disc, the friction ring (cast iron) and hub (aluminum alloy) are connected by steel pins. The resulting, floating construction reduces the thermal buffering of the friction ring in the operating temperature state substantially, because the friction ring can freely expand under thermal stress (e.g. when braking from high speeds or several consecutive brake applications). The use of aluminium alloy also considerably reduces the unsprung masses on the vehicle.

Material quality / high carbon - Zimmermann brake discs are usually made of cast iron (with flake graphite) of different qualities; they correspond to the material used for the original spare parts. Therefore, the utilization of such materials (referred to as High Carbon by the competition) has always been a matter of course for Otto Zimmermann.

Features and Benefits:

  • Excellent deceleration action and no distortion of friction ring at high temperatures
  • Substantial weight saving and therefore less unsprung mass
  • Floating mounting enables radial expansion of the brake disc under relatively heavy loads, thus preventing shielding and increasing resistance to heat cracks
  • Hot spots prevented by optimized design of ventilation channels
  • 1:1 exchange of original disc possible
  • Not subject to registration: general ABE certification supplied with disc
  • No conversion required for brake tuning

 

Part #'s

LEFT: 34-11-2-282-445 / 34 11 2 282 445 / 34112282445

RIGHT: 34-11-2-282-446 / 34 11 2 282 446 / 34112282446


Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 38775480270

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Ian
Pawtucket, US
★★★★★ 5
Light, comfy, and a brand you can trust with your feet
Size: 3.5 Big Kid, Color: Black/White
My son tears through shoes and somehow they're perpetually untied, no matter what we do. These are great as they don't need to be tied but look laced up, are very light and cushiony, and just look great so they go with everything. Saucony is also a great trusted brand that I've run a few marathons in myself, so I figured, let's try a pair and see how long they last. It's only been a few days but I'm getting good reviews from my son and they're his new go to pair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2025
E
Verified Purchase
ERyder
Port Orchard, US
★★★★★ 5
Great sneaker
Size: 4.5 Big Kid, Color: Navy/Silver
Comfortable and has good support.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
S
Verified Purchase
Socal Viking
Charlottesville, US
★★★★★ 5
Great shoe seems supportive
Size: 3.5 Big Kid, Color: Black/White
Bought the shoe because it was recommended by a podiatrist for young kids and I'm pleased with what seems like good support.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 15, 2025
A
Verified Purchase
Abby S.
Draper, US
★★★★★ 5
Good fit. Good support. Good for my new runner!
The quality definitely meets our expectations. The price point is pretty good; I can't swallow adult-sized prices for kid-sized shoes. Delivery was early...which my son really appreciated!
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Reviewed in the United States on November 24, 2024
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Nick Fitz
Birmingham, US
★★★★★ 1
Falling apart
Size: 5 Big Kid, Color: Teal/Periwinkle, Size: 5 Big Kid, Color: Teal/Periwinkle
I bought these two weeks ago for my daughter to train and use for a mini triathalon she is doing and the sole tread are already coming apart in several areas. Including the toe. Not worth the money
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Reviewed in the United States on May 30, 2026

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