In May 1983, a standard BMW 635 CSi was delivered to the small town of Buchloe, southwest of Munich, to undergo a remarkable transformation by Alpina, the legendary BMW tuning company. The result was the Alpina B9 3.5 Coupé/1, a precision-engineered sports car that combined BMW’s iconic design with Alpina’s renowned performance enhancements.
Technical Enhancements and Performance
At the heart of this transformation was Alpina’s expertise in optimizing the BMW M30 3.4-liter straight-six engine. The engine was fitted with Mahle pistons, an upgraded camshaft, and a reworked cylinder head, raising its power output to an impressive 245 horsepower. To complement this performance boost, Bilstein suspension was installed, ensuring the car handled with precision and stability, offering a dynamic driving experience on both winding roads and high-speed highways.
With these modifications, the B9 3.5 Coupé/1 could achieve a top speed of 240 km/h, a figure that underscored its high-performance credentials. Alpina’s distinctive aesthetic touch was also applied to the car’s Alpine White exterior, featuring signature Alpina graphics. Inside, striped Recaro sports seats provided both comfort and style, reinforcing the car’s blend of luxury and performance.
Exclusivity and Provenance
This particular B9 3.5 Coupé/1, assigned Alpina production number 190, is a rare find. Alpina only built 73 examples of this model between 1983 and 1985, making it a true collector’s item. First registered in Germany in March 1984, the car remained in the Frankfurt area until the early 2000s. In 2012, it was acquired by its current owner in Norway, where it has been well-maintained, with its odometer reading 160,118 kilometers at the time of cataloging.
A Connoisseur’s Dream
The 1983 BMW Alpina B9 3.5 Coupé is more than just a car—it’s a statement of refined taste and engineering excellence. With its blend of classic BMW design, Alpina’s technical expertise, and a rare production run, this model offers an opportunity for true enthusiasts to own a piece of automotive history.
Now offered at auction in Munich, Germany, with an estimated price range of €75,000 – €100,000, this Alpina B9 3.5 Coupé is a rare and appealing driver’s car that will distinguish its next owner as a connoisseur of fine automobiles.
Source: rmsothebys.com
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