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EPISODE 05: BMW M3 & M4 EXPLAINED.EPISODE 05: BMW M3 & M4 EXPLAINED.

EPISODE 05: BMW M3 & M4 EXPLAINED.

5 min reading time

The wheel design of BMW M3 and M4.

The BMW M designers Andreas and Kristian explain the new BMW M wheel designs.

22 January 2021

The epitome of racing feeling in everyday traffic starts a new round. 35 years after the debut of the first BMW M3, BMW M GmbH presents the latest generation of its high-performance automobiles in the premium mid-size segment. Time to introduce the two new vehicles. In the #M3M4explained series, the developers have the floor.

First-hand information from those who know best. In the fifth episode of our series, designers Andreas and Kristian talk about all the details of the rims on the new M vehicles and answer questions from the M community.

BMW M3 Competition Sedan:
CO2 emissions combined in g/km 224–223 (WLTP)
Fuel consumption combined in l/100 km 9.8 (WLTP)
RIMS. BMW M3 UND M4 - EXPLAINED.RIMS. BMW M3 UND M4 - EXPLAINED.

RIMS. BMW M3 UND M4 - EXPLAINED.

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BMW M ENTHUSIASTS ASK, BMW M EXPERTS ANSWER.

BMW M3 forged wheel.BMW M3 forged wheel.
The new 20" M Performance forged wheel cross-spoke 1000M in Frozen Gold.

Are they all diamond cut or are there any more durable powder-coated options?

Kristian: The surface is already so good after production that nothing needs to be recut or cut to a diamond finish. All wheels are powder-coated in series production.

How much does the lightest wheel weigh and which one of the range is actually the lightest?

Kristian: The lightest OEM wheels are the 963M weighing in 9,9 kg for the 19" (front) and 10,9 kg for the 20" rims (rear). So these 4 rims are approximately 3,5kg lighter compared to a 826M car set.

BMW M4 Double-spoke style.BMW M4 Double-spoke style.
19'' Double-spoke style 826 M Black: 10,5Jx19" IS20

Which is the best choice for daily use? Concave design or M Performance?

Andreas: Basically, all wheels are designed to work best with the car in daily use. However, it depends on the local road conditions where you drive or your driving purpose in general. On the race track, things look different again.

What is the width and offset for the wheels?

Andreas: Dimensions are: 824M: 9,5Jx18" IS20 / 10,5Jx19" IS20; 825M / 826M / 963M: 9,5Jx19" IS20 / 10,5Jx20" IS20; 1000M: 9,5Jx20" IS20 / 10,5Jx21" IS20; 829 M (winter wheel): 9,0Jx19" IS20 / 9,5Jx19" IS20

BMW M4 ' Double-spoke style.BMW M4 ' Double-spoke style.
19'' Double-spoke style 825 M Orbit Grey matt: 10,5Jx19" IS20
BMW M3 Double-spoke style.BMW M3 Double-spoke style.
18'' Double-spoke style 824 M Orbit Grey: 9,5Jx18" IS20
BMW M gold rims.BMW M gold rims.

Why don't you add a rim with large outer lip to enhance the depth effect like on the old E39 M5?

Kristian: Because the brake calipers are getting bigger and bigger and thus the space for moving the spokes inwards is limited. From a design point of view: such rim flanges or outer lips also look rather dated on modern cars. On my E28, on the other hand, it fits because it is contemporary and visually correct.

How much camber is there on the new BMW M3 and M4?

Andreas: Front axle camber is -1°40", rear axle camber is -1°50".

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