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This E34 Alpina sold for $26,000 on 1/10/2022.
It’s hard to imagine being the bottom of the totem pole at Alpina, but the 3.5/1 might just be that car. In part that’s because the E34 lineup was so robust, featuring the cool 3.0 Allrad and the Learjet-channeling BiTurbo. When BMW ceased the production of the M30, V8 powered 310 and 340 horsepower 4.0 and 4.6 models replaced the inline-6. In comparison to those headliners, the 254 horsepower B10 3.5/1 seemed like an article more suited for the corner of page 2. However, consider for a moment that the B10 3.5/1’s power numbers were nearly identical to the contemporary super-saloon S38-powered E28 M5 when it was launched and it helps to restore some clarity to the impressiveness of the products rolling out of Buchloe. Today chassis number 520 of the 572 3.5/1s produced is up for sale in Indiana:
Alpina has always struck me as one of the most thorough tuners in the world. Their research and development of engines, suspension and exhaust is second only to perhaps Ruf and AMG, thanks largely to their close associations with the factory. Inside the fit and finish of the cars is perhaps even better than they came originally; beautiful details that make the cars stand apart. And visually Alpinas have always been the best looking BMWs out there in my opinion; subtle aerodynamic tweaks, beautiful wheels and striking but tasteful “go faster” stripes that distinguish Munich’s best. But even amongst Alpinas there are special models, and the E34 B10 BiTurbo is one of them. Alpina took a normal 535i and made it’s own interpretation of what the M5 could be; instead of a high-revving twin cam S38, you got two turbochargers with enough torque to embarrass those boys from Affalterbach. Alpina achieved this through a full custom build; Mahle pistons, custom oil sprayers to cool the them, stronger connecting rods, sodium-filled valves and bespoke intake and exhaust systems – but then, Alpina’s never been shy about producing it’s own items. While all Alpinas are rare, the B10 BiTurbo was fairly popular; of the 1600-odd E34s Alpina built, a full 507 of them were B10s.
Following up on the recent Callaway Stage IIs, the other best-known American turbocharger of German products in the 1980s was Steve Dinan. Equally highly regarded, Dinan’s products have made their way from a small independent to being offered in BMW dealerships across the country, and the quality of his work is on par with the best independent tuners from Germany – Hartge and Alpina. Dinan has taken on tough projects – turbocharging the S38, BMW’s first V12, and punching out their V10 to 5.8 liters – and come away smiling.
Today, one of his less-exotic historical products is on the market. In this case it’s a 1989 535i that was turbocharged, lowered and stiffened, and given a big set of wheels. It’s the classic recipe, and sure enough, the outcome looks nice. But what makes this car notable is that it was reportedly Steve Dinan’s personal car, and is presented as the poster pinup probably more than a few of us reading about in Car & Driver when new: