TAG Motorsports recently received a first set of KW Height Adjustable Springs for their in house VMW M4, code named “Black Betty”.
Everybody who is over twenty years old should know the song of the same name by Ram Jam, one of the better upbeat songs of the golden era of rock and roll. Now that the trip down memory lane is done, we can get back to the matter at hand, the KW Suspension system installation for this beautiful vehicle.
KW height adjustable springs kits are a great alternative to conventional springs. You don’t have to be satisfied with a fixed lowering as you can adjust the height with the KW height adjuster even after the kit has been installed. This works well for some customers who like to frequently swap wheels on their cars. These allow the specifications for lowering in set numbers: front: 15-30 centimeters / 0.6-1.2 inches and rear: 5-30 centimeters / 0.2-1.2 inches.
With individual height adjustments, the driving performance will be increased and the car should handle better in every situation. It also offers a great cornering speed performance improvement. All driver assistance systems and comfort features of an adaptive series suspension remain intact which is a big selling point. The KW Height Adjustable Spring Kit allows for individual height adjustment of the standard suspension kit, adaptive damper control remains active, vehicle specific spring rates, better steering behavior and as mentioned the improved looks.
Our M4 is equipped with the Adaptive Suspension. In stock form there was a decent difference between all three settings but the “sport plus” mode was certainly firm. These new KW HAS are allowing us to keep the active dampers, and giving us the ride height adjustability that we are looking for. The ride in the normal “Sport” mode certainly firmed up from stock, but it really made the car feel much more stable, as it removed some of the bounciness the factory suspension had. The firmness is not uncomfortable though, in the short drive from San Diego to Newport Beach over the weekend, there was a few dips in teh highway that I know i have to prepare myself for (when i had the H&R Supersport Springs on), and in the KW’s still were more harsh, but it was a much sportier feel.
Overall, the ride is MUCH better than going with just standard springs. The ONE negative side one would noticed with 20×10 HRE P104 wheels at the front, the new larger spring perch did not allow us to lower the car down to H&R Supersport Spring Levels. The clearance between a 20×10 front wheel, combined with the 265/30/20 Pirelli Tires at the front, allowed us only to go about 1.2” lower than stock.
For those that are interested in doing these springs and getting a significant drop, we recommend a 9.5” wide wheel up front with a lower offset. – TAG Motorsports, Initial Driving Impressions
We are impressed by what we can see and the stance and overall look of the vehicle is simply stunning! A BMW M4 certainly benefits from lowering a set of custom wheels, same to what is installed on this build. Please grab a few moments and take a look at the media gallery with the photoshoot of the KW Height Adjustable Spring Kit that was installed on this beauty right below.