The BMW M6 and 635CSi (E24), produced between 1987 and 1989, represent a pinnacle of automotive engineering and performance, hand-built by the renowned BMW Motorsport team in Garching. As a Boston-based enthusiast community, we recognize the significance of these vehicles, not just as cars, but as investments in a rich automotive history. With only around 5,800 examples produced worldwide, these models are becoming increasingly rare and sought after, particularly clean original-paint versions that command impressive values in the collector market.
Your donation to Revive Rides provides critical support for preserving these remarkable machines. We respect the preventive maintenance discipline that ensures their longevity: from timely engine services to body rust repair, each aspect of care is vital. By donating your E24, you contribute to a worthy cause while also ensuring that these legendary grand tourers continue to be cherished and celebrated.
📖Generation guide
E24 M6 • 1987-1988
The US-market M6 features the powerful S38B35 3.5L I6 engine producing 256hp, paired with a Getrag 280 5-speed manual transmission, highlighting its place in the collector's market.
M635CSi • 1984-1989
The Euro-market M635CSi offers a more potent version of the S38B35, delivering 286hp. It remains distinct from the M6 due to its different market designation.
635CSi • 1984-1989
This non-M variant features the M30B35 engine, producing 182hp. It serves as an entry-level option compared to the performance-focused M variants.
M6 vs. 635CSi • 1987-1988 vs. 1984-1989
While both share a chassis, the M6 benefits from the M designation, enhancing its collector value significantly compared to the 635CSi non-M.
Known issues by generation
Both the M6 and 635CSi share specific known issues that potential owners and donors should be aware of. The S38B35 engine in the M6 often requires timing chain and guide replacements after 100-150k miles due to notorious chain rattle symptoms. Additionally, proper synchronization and balance of the six individual throttle bodies are crucial for optimal performance. For the 635CSi, the M30B35 engine may experience head gasket failures and issues with the thermostat and water pump. Rust is a common affliction in the Boston region, particularly around the A-pillar drip rail and rocker panels, making regular inspection essential for these cherished vehicles.
Donation value by condition + generation
The appreciation for the E24 M6 and M635CSi is undeniable, with collector values ranging significantly based on condition and originality. Pristine examples with matching numbers and original paint can command upwards of $130,000 at auction. The manual transmission variant holds particular allure, often fetching a substantial premium over automatics. Conversely, the non-M 635CSi is valued lower, yet still represents a desirable option for collectors. The importance of documented service records, especially for timing chain replacements and rust repair, cannot be overstated, as they are critical for validating the collector status of these cars.
Donation process for this model
Donating your BMW M6 or 635CSi to Revive Rides is an opportunity to support a foundation dedicated to automotive preservation. We strongly recommend that donors consult qualified appraisers with documented BMW Motorsport or vintage M specialist credentials. As these blue-chip collector cars often exceed the $5,000 threshold, proper documentation using IRS Form 8283 Section B is crucial. We emphasize the importance of enclosed transport for matching numbers and pristine examples, as well as the need for BMW Garching build plate authentication to validate the vehicle's history.
Boston regional notes
In Boston, owners of the BMW M6 and 635CSi have access to a vibrant community of vintage BMW specialists and independent restorers familiar with these iconic models. Events like BMW-CCA Bimmerfest and Legends of the Autobahn celebrate our shared passion for these vehicles. Given the region's salt-belt conditions, owners must pay particular attention to rust-prone areas and consider climate-controlled storage options for preservation. Local shops with expertise in S14, S38, S50, and M30 engine codes can provide invaluable support in maintaining these classics.
FAQ
What are the maintenance intervals for the S38 timing chain?
How do I authenticate my M6's BMW Motorsport Garching build plate?
Is there a premium for manual transmissions?
What documentation is necessary for grey-market Euro-import compliance?
How do I verify factory color versus repaint?
What is the importance of documented service records?
Do I need a qualified appraiser for Form 8283?
Other model-specific guides
Vehicle Donation Resources & Guides
In-depth tax, paperwork, and donation logistics guides published by our editorial team — bookmark these before you donate.