Recently, the guys from KW launched 3 new coilovers for the BMW 4 Series convertible.

While all do a great job of improving stability of the car and lowering the height, each one differs a bit. As such, the Variant 1 coilover is a rigit one, not allowing the user to modify the height of the car. But this doesn’t make it any less good, it just caters to a different kind of alteration.

The other two coilovers allow for some height modification. The Variant 2 coilover from KW can be modified by 16 clicks. The Variant 3 coilover will only allow for a 12 click adjusting. But whichever kit you go for, you can be sure you will have an improved ride for whatever other mods you want to install.

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And for good reason, as it is the successor of possibly the best BMW tuning platform out there.

So when AC Schnitzer came out with their product for the 4 Series convertible, there was little wonder they managed to do it in such a short time. As far as visuals go, not much was done to it, as AC Schnitzer just offers a few choices of wheels, chrome exhaust tips and various other knick knacks.

Performance wise, the tuner did its due diligence, as every drive option got a power upgrade. Thus, the 420d gets a power bump from 181 Hp to 215 Hp, while the 420i goes from 181 Hp to 241 Hp. Moving up the range, we get the 428i, which has a power increase from 241 Hp to 289 Hp. The 435i goes from 302 Hp to 355 Hp, while the range topping 435d goes from 308 Hp to 355 Hp.

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Alpina has earned its place among the top tuners of the moment, and as it should be expected, they will also be present at the Geneva Motor Show.

Their center piece has already been leaked, and it’s the Alpina B4 Bi-Turbo Cabrio. As the name would suggest, the vehicle is based on the BMW 4 Series Convertible, and after Alpina was done fiddling with it, the 3.0 liter twin turbo engine is capable of unleashing some 410 Hp and 600 Nm of torque.

The power output enables the vehicle to reach 100 km/h in 4.5 seconds before capping a top speed of 301 km/h. Fuel consumption was estimated at 8.0 liter/100 km. The full reveal will take place at this year’s Geneva Motor Show, and soon after takers will be able to buy one for $102.810.

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