BMW 4 Series Convertible 2021
The movement of the roof when you open or close it is also different. Now the whole thing creates a “Z” shape when folding, stacking the three main pieces of the roof on top of each other and neatly folding them in the back. The whole process takes around 18 seconds, according to BMW, and you can do it at speeds of up to 50 km / h (31 mph), which is an improvement over the last generation of the 4 Series. Of course, just like it was on the old one too, the windows are automatically lifted when the process is complete.
In addition to the 40% weight reduction, the new roof also takes up less space in the trunk. So you now have access to 300 liters of trunk space, which is 80 more than in the previous generation model. It might seem like an impressive upgrade, but it’s worth mentioning that the boot opening is rather small. If you plan to carry things there, you might want to make sure that they will fit under the allotted space for the roof.
However, an interesting trick implemented by BMW is the possibility of adjusting the flap of the soft top compartment. So when the roof is up, you can access up to 385 liters in total. As standard you have a ski hatch between the rear seats, in case you want to ski or perhaps carry longer items.
Another novelty for the 4 Series convertible is the possibility of configuring it with two different color choices for the textile roof. You can go for a classic black finish or you can have it with a charcoal silver effect finish which looks pretty crisp.
Technically a 4-seater, practically for two people
Inside the cockpit, there aren’t many differences compared to a classic coupe model. Everything looks exactly the same up front but you will notice the lack of a B-pillar which creates a feeling of space when sitting in the car. It also makes access to the back a lot easier, as you can roll the windows down to help passengers out. However, there is a noticeably smaller and cramped feel in the back.
Theoretically, the 4 Series convertible is a four-seater, but the rear seats would only work for… little humans. Their backrests are also a bit straighter, making long journeys a bit tedious. Also, the same old wind deflector solution was rolled out by BMW for the new 4 Series sunroof and that’s a bit of a letdown.
While other automakers have created new solutions to this problem, BMW is sticking to a design that hasn’t changed much since its introduction on the E30 3 Series convertible. It’s the same two-piece mesh. which attaches to the rear seats and basically overrides them. Therefore, if you want to take a longer trip, at higher speeds, you will have to choose: personal comfort or take up to three people with you.
And this wind deflector really makes the difference. Its use makes driving the 4 Series convertible quite comfortable, without too much turbulence at speeds up to 110 km / h (68 mph) but if you remove it you will notice that the same threshold drops to around 80 km / h. (50 mph). ). Raising the side windows will also help a bit in this regard.
As is always the case, if you also want to enjoy good tunes along the way, you should probably go for the high-end Harman Kardon audio system available on the 4-Series convertible. we had on our tester delivered a really good sound and it was pretty impressive overall. It covered a wide range of frequencies and had a warm sound. Its only problem was the volume, but I guess that’s why you get the Harman Kardon alternative.
A different driving experience than the coupe?
On the road, the 4 Series convertible looks a lot like its coupe sibling. Some things have changed, as you can imagine. As is the case with any sunroof, the body of the car had to be reinforced, to dispense with a very important structural part: its roof.
The additional reinforcement was not only aimed at increasing the rigidity of the body, but also the suspension. To this end, an additional pair of struts were installed to strengthen the rear of the car. Other model-specific features of the convertible include extremely torsionally stiff side skirts, a double heel plank, a low aluminum shear panel in the front, a reinforced transmission tunnel in the rear compartment and a footplate. also extremely rigid floor at the rear. As a result, the static torsional stiffness of the new BMW 4 Series Convertible is overall up four percent compared to its predecessor.