If you wanted a more fun and even faster 850i you would have to go for this car. The Alpina B12 5,0 Coupé.
It came in 1991 and has the same engine as the B12 5,0 Limousine.
A total of 97 cars were built.
The engine is based on BMW´s 5,0 litre V12 unit.
The displacement is unchanged at 5,0 litre, as are the block,crankshaft, connecting rods, inlet and exhaust manifolds and cooling system.
Different Mahle pistons raise the compression,larger inlet valves,more valve lift and changed valve timing get more mixture into the engine.
The combustion chambers are changed to accommodate the larger inlet.
New three-way metal catalysts and new stainless steel exhaust systems are also fitted.
Alpina has also reprogrammed the Motronic management system to raise the maximum engine speed from 6000 to 6400 rpm.
The top speed limiter is of course eliminated.
These changes, plus a couple of other, increase the power to 350 bhp
The torque is higher too, 470 Nm at 4000 rpm instead of 450 at 4100.
The engine is connected to a 4-speed automatic gearbox.
The suspension has shorter and stiffer springs and gas-pressure dampers.
The wheels are 18in high with 245/40 tires at front and 285/35 tires at rear.
The interior changes include
a new leather-covered 3-spoke steering-wheel,
a gearknob made of leather
Nappa leather sportseats in Alpina design
and new instruments with blue background and red needles.
The only exterior changes are :
a new front-spoiler
the badges and the exhaust pipes.
Alpina claimed a 0-100 km/h time of 6,8 seconds and a top speed of over 280 km/h
In Auto Motor und Sport´s test the B12 accelerated
- 0-100 km/h in 7,0 seconds
- 0-160 km/h in 15,0 seconds
- 0-200 km/h in 23,0 seconds
and had a top speed of 283 km/h.