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Driving the Dinan S3-R BMW 1M Coupe

Robert Ross

Dinan takes a holistic approach to tuning, which means that powertrain—from intake to exhaust—as well as suspension, brakes, and wheels are all engineered and upgraded for enhanced performance. The standard-issue 1M is no slouch; its twin-turbocharged, 3-liter inline six develops 335 hp and up to 370 ft lbs of torque.

Starting in the engine bay, Dinan’s large-compressor twin-turbo upgrade with updated waste gates produces more than 14 psi of boost at 6,000 rpm. A carbon-fiber cold-air intake, high-capacity oil cooler, and Stage 4 Performance Engine Software upgrade that recalibrates 2,000 lines of engine-management data are complemented by an industrial-strength air-to-air intercooler and a beautiful stainless-steel free-flow exhaust (fabricated in-house by Dinan). At 444 hp and 450 ft lbs of torque at 3,300 rpm, the increased output is not subtle and is rather addictive. This added performance comes not at the price of tractability—it takes nothing away from the 1M’s friendly manners—but at $12,194 for parts.

Under the car, a $4,296 Dinan suspension package features a coil-over system that works on the track but does not compromise comfort on the street. Unlike some setups that squeak, rattle, and torture passengers with a harsh, choppy ride, the Dinan suspension is tuned for the real world, with a lightweight adjustable front antiroll bar, a spherical mono-ball front bearing kit, and precision rear toe links.

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