Published on Apr 19, 2014
At the 2002 Paris Motor Show, Alpina introduced the B3S. It replaced the B3 3.3 except for the allrad (4-wheel drive) models. If you wanted similar performance to the E46 M3 but want something more comfortable and discrete this is the car for you.
As you might know the E46 M3 is unfortunately only available as a coupe and convertible but B3S is also available as saloon and touring.
And since the price is very good- this is one of the most complete performance packages out there.
The B3S uses an evolution of the B3 3.3 engine. Alpina increased the bore from 86.4 mm to 87 mm which increased displacement to 3346 cm3.
They also reworked the intake and developed a newer exhaust manifold to make it ‘breathe’ more freely.
Together with a newer version of the Siemens engine management system these changes make the B3S produce 305 bhp at 6300 rpm and 362 Nm of torgue at 4800 rpm.
90% of the maximum torque is available from 2500 rpm.
It also interesting that the B3S has a lower compression ratio than the 3.3
The gearbox is the same 6-speed unit that’s used in the B3 3.3, a Getrag Type 266.
Available as an option is the 5-speed SwitcTronic gearbox.
The suspension and brakes are identical between the B3 3.3 and the B3S.
The tire-dimensions are the same 225/40 18″ at front and 225/35 18″ at rear.
One difference is that rear whee;s on B3S are wider, 9” instead of 8.5″.
NO differences from the B3 3.3- except that most of B3S are of the mid-production E46 facelift models whereas most of the B3 3.3 are pre-facelift.
Alpina claims (SwitchTronic): Saloon: 0-100 km/h in 5.4(6.4)sec, 0-1000 metres in 24.9(25.9)sec and the top speed of 270(265) km/h
Coupe: Exactly the same as the saloon but higher top speed 271(266) km/h
Touring: 0-100 km/h in 5.8(6.6) sec, 0-1000 metres in 25.4(26.6) seconds and the top speed of 266(261) km/h
Convertible: 0-100 km/h in 5.8(6.6) seconds, 0-1000 metres in 25.6(26.7) seconds and the top speed of 264(259) km/h
In the German magazine Auto Motor und Sport the B3S got some very impressive times: 0-100 km/h in 5.2 seconds, 0-1600 in 11.7 seconds and 0-200 km/h in 180.2 seconds.
In another german magazine, Auto Zeitung, they tested a B3S with SwitchTronic and it accelerated 0-10 km/h in 5.9 seconds.