2015 BMW 4 Series 435i M-Sport M Performance Convertible

Vehicle Description

This 2015 BMW 435i Convertible is one of the most dialed M Sport builds we’ve seen come through Supreme Motors, and that’s saying something. Finished in the rare and sought-after Alpine White over Coral Red Dakota leather combo, this rear-driven Bavarian open-top machine delivers all the hallmarks of true enthusiast taste—performance, spec, and history. This isn’t your average 4-Series; it’s a 435i with the full M Sport Package, upgraded M Sport 20" staggered wheels, Harman/Kardon audio, and nearly every package BMW offered in 2015. It’s powered by the legendary N55 inline-six twin-scroll turbo engine, paired to the fast-shifting 8-speed ZF automatic, delivering 300 horsepower with a perfect blend of response, reliability, and tunability. The condition is impeccable, the car is completely unmodified, and it has a clean Carfax history with no accidents or blemishes of any kind. Even better, it is a locally owned Washington car that hasn’t been through any rental fleets. This one checks every enthusiast box—color combo, drivetrain, options, and history.

The M Sport Package alone transforms this car’s presence from commuter luxury coupe to something more serious. You get the aggressive M aerodynamic body kit, M door sills, M steering wheel, shadowline exterior trim, sport seats, and the factory sport suspension—all tuned for sharper response and visual punch. The M Sport brakes give you increased stopping power and pedal feedback, something you’ll notice the first time you push it through a mountain pass or late brake into a freeway merge. The 20” M Sport wheels featured here are a serious upgrade from the base 18s, and fill out the arches with proper stance and grip, all wrapped in high-performance rubber. The combination of chassis dynamics, steering feel, and rear-wheel-drive layout makes this 435i one of the most satisfying open-top drivers in its segment. If you’re looking for a floaty cruiser, look elsewhere. This one’s for drivers who care about the way a car rotates and communicates.

Inside, the Technology Package adds the wide-screen navigation system, heads-up display, touchpad iDrive controller, BMW Online with real-time traffic, and a fully digital instrument cluster. It’s a significant step up from the base screen and offers better long-term tech usability, especially with the upgraded iDrive system that’s more intuitive and faster than early iterations. The Premium Package includes keyless Comfort Access, lumbar support, and satellite radio, features that round out the cabin and make everyday use more convenient. But the real standout is the Coral Red leather—it’s rich, deeply bolstered, and contrasts perfectly against the Alpine White exterior. Add in the ambient lighting, power neck warmers, and heated front seats, and you’ve got a roadster that excels in both summer sun and shoulder-season drives. BMW nailed the balance here: top-down theater with top-tier comfort.

Mechanically, this car is rock solid. The N55 engine is known across the industry as one of BMW’s most reliable performance mills, and with proper maintenance, it easily goes 200K+ miles. This particular example has had routine oil changes, is bone stock, and shows no signs of deferred maintenance or wear. The transmission is crisp, the steering is tight, and the power delivery is linear with a satisfying midrange torque curve that makes freeway on-ramps feel like a mini Nürburgring session. The hardtop convertible mechanism works flawlessly and has no hesitation or mechanical hiccups. It folds and seals with the precision you’d expect from German engineering—something you don’t always get with older soft tops. Even the undercarriage and engine bay are clean, which is a direct reflection of its previous ownership and lack of abuse.

The Harman/Kardon surround sound is another major highlight—especially for convertible driving. BMW’s standard audio is decent, but the H/K system adds clarity, depth, and bass response that punches through even with the top down at 60 mph. With 16 speakers and 600+ watts of power, it delivers studio-quality acoustics to match the dynamic exhaust note of the N55. Pair this with Bluetooth audio streaming, voice commands, and dual USB inputs, and you’ve got a tech-forward interior that doesn’t feel dated nearly a decade later. The cabin has aged gracefully, with premium materials throughout—soft-touch dash, aluminum trim, and stitched leather in all the right places. Everything still feels tight, like it rolled off the showroom floor last week.

At Supreme Motors, we specialize in rare, clean, enthusiast-grade builds like this—cars that hold value over time because they’ve been curated, not cycled through multiple owners, auctions, or rentals. This 435i has an unbeatable history, is loaded with every major package, and has the rare M Sport aesthetic paired with the most favored white-on-red combo. It’s one of the few convertibles that actually blends the feel of a sports coupe with the benefit of open-air motoring. If you’ve been watching the market, you already know that clean M Sport 435i Convertibles are becoming harder to find—especially in this color, with these options, and in this kind of shape. This one is the real deal, and if you know what you’re looking at, you’ll know you need to move quickly.

Visit Supreme Motors online at www.thesuprememotors.com to see more pictures of this vehicle or call us at 253-277-0677 today to schedule your test drive.

The data regarding manufacturer vehicle specifications are sourced from external entities. We kindly request that you reach out to our establishment via email or telephone for comprehensive information and to confirm availability. Please be advised that the quoted price does not include sales tax, tab's, title, registration fees, governmental charges, Anti Theft and a negotiable $200 Documentary Service Fee. Additional out of state fees may apply.