The New BMW ALPINA XD3 and the BMW ALPINA XD4: Suspension, Chassis and Brakes
The
new BMW ALPINA XD3 and the BMW ALPINA XD4 have core development aim to improve
the suspension and chassis due to the higher performance of the powertrain and to introduce more dynamic
and sharper handling for a typical ALPINA ride comfort.
 |
| Both the BMW ALPINA XD3 and the BMW ALPINA XD4 used an ALPINA sport suspension, which is with electronically adjustable dampers for balanced chassis characteristics. |
Both
the BMW ALPINA XD3 and the BMW ALPINA XD4 used an ALPINA sport suspension,
which is with electronically adjustable dampers for balanced chassis
characteristics. During the development the focus is placed on improving the
lateral driving dynamics markedly and on providing a wide range differentiation
between the different driving models. The ALPINA XD3 and ALPINA XD4 have the
Driving Experience Control switch with which the suspension is adjustable in
rebound and compression from maximum dynamics in Sport+ Mode to maximum ride
comfort in Comfort+ Mode. The new BMW ALPINA XD3 and BMW ALPINA XD4 have sport
springs, both stiffer and shorter. The result is a lower center of gravity for
a further optimization of handling and aerodynamics.
Due
to one degree of negative camber at the front axle gives very neutral handling
and excellence lateral grip for both the BMW ALPINA XD3 and the BMW ALPINA XD4.
The new models have a variable ratio electromechanical steering rack. The
ALPINA adaption ensures precise steering and also requires less steering input
at lower speeds, which is very useful for parking.
The
new BMW ALPINA XD3 and the BMW ALPINA XD4 are fitted as standard with the
ALPINA CLASSIC 20” wheels with twenty spokes, lockable hub covers and hidden
air valves. The air reaches the tire via a hollow drilled spoke. The BMW ALPINA
XD3 and the BMW ALPINA XD4 are available with optional aluminum ALPINA CLASSIC 22”
wheel and tire combination. It reduces unspring masses with 15 kg which is
nearly 30% in comparison with to conventional cast aluminum wheels of the same
size.
 |
| The new BMW ALPINA XD3 and the BMW ALPINA XD4 are fitted as standard with the ALPINA CLASSIC 20” wheels with twenty spokes and optionally with ALPINA CLASSIC 22" aluminum wheels. |
The
BMW ALPINA XD3 and the BMW ALPINA XD4 comes with different tires for each axle.
If the choice is ALPINA CLASSIC 20” the SUVs come with ultra-high performance tires
from Pirelli measuring 255/45 ZR20 front wheels and 285/40 ZR20 rear wheels. If
the choice is the optional ALPINA CLASSIC 22”, the tire set-up is with a new
development by Pirelli with size 255/35 ZR22 front and 295/30 ZR22 rear. Both
20” and 22” Pirelli P Zero tires are develop especially for ALPINA’s requirements
and bear ALP labeling. The tires combine motorsport technology with a flat
shoulder contour and an innovative tread pattern facilitates high lateral loads
and precise steering feeling without compromising wet handling.
The
brake system of the new BMW ALPINA XD3 and the BMW ALPINA XD4 uses four piston
fixed caliper with 395 mm discs at the front and floating caliper with 370 mm
discs at the rear. Optionally, you can choice a high-performance brake system which
combines lightweight drilled composite discs measuring 395 mm at the front and
398 mm at the rear with sport-spec brake pads for even more fading resistance
under very high loads. The sport-spec brake pads and drilled brakes discs can
lead to increased brake noise or brake vibration which won’t be big deal if you
want to use exactly this brake set-up.
More
topics about the new BMW ALPINA XD3 and the BMW ALPINA XD4:
