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.
In episode one, Klaus, responsible for Functional Integration BMW M3 and M4, explains how he makes the vehicles lighter and faster. He also answers questions from the BMW M community.
BMW M ENTHUSIASTS ASK, BMW M EXPERTS ANSWER.
Why is the new M4 not as wide as the new M3?
Klaus: The additional width of the M3 is a result of the required rear wheels arch covers in ECE spec models. (US spec models M3/M4 are identical in width.)
What are the tire sizes on the BMW M4 and M3 Competition?
Rear tyres: 285/30-R20 (standard: 285/35-R19).
Front tyres: 275/35-R19 (275/40-R18).
Can you get the M carbon bucket seats for the BMW M3 with manual gearbox?
Yes, for sure!
Why is there no carbon strut in the engine compartment?
In the given geometry of this vehicle, the choosen concept is the optimum solution functionally.
Are pistons forged in the S58 engine?
SPOILER ALERT – Watch out for another episode to come …
Why is the new M4 heavier than the old one?
First, in order to achieve a higher level of performance there are bigger brakes and wheels, lots of chassis stiffening measures, and sufficient cooling for stable racetrack performance. Additionally, the new generation has grown, as has the regular BMW 4 series. Furthermore, there are new emissions and safety standards in place which increase the vehicle's weight. Finally, the standard equipment of the car is higher than the base spec of its predecessor.
Does the competition version come with manual transmission?
The Competition models always come with M Steptronic.
How much does the new M4 with automatic transmission weigh?
The M Steptronic transmission adds 25kg of weight. Sedan models are 5kg heavier than the comparable Coupé versions.
Why have the models with manual transmission less hp than the automatic ones?
The manual gearbox is in combination with the generally high requirements for durability / longevity etc. not designed for the increased performance requirements of the Competition version.
What is the difference in weight between the M4 with all options and one with the minimal option?
The difference between maximum and minimum weight spec is approx. 70kg in the new BMW M3 and M4.
Is it possible to shift from xDrive to RWD in the AWD models of the M3/M4?
***SPOILER ALERT*** Yes, it is!
Does adding any options, such as sport differentials, add weight to either M3 or M4 models?
The Active M Differential comes as standard equipment for all M3 and M4 models. Of course, options can add weight (e.g. electric sunroof +23kg) or reduce weight (e.g. M Carbon bucket seats -10kg).
How big is the tank on the M4?
59 liters.
What is the capacity of the trunk of the M4?
440 litres.
Ceramic brakes for daily use? Is this a good choice?
***SPOILER ALERT*** Watch out for another episode to come …
What is your favourite part about this generation, compared to the last?
Overall: the driving characteristics. As a single part: the M Carbon seats.
How long have you been at BMW?
Since 1997.
How did you get into your job?
I have been a petrol head since I was a child …
Your own configuration of the M3 or M4?
The M3 (with 6-speed MT) and M Carbon bucket seats.
What do you drive Klaus?
M3 Coupé Competition (E46) in Silver Grey metallic on black leather.
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