The BMW M6 and 635CSi (E24) represent the zenith of 1980s automotive engineering, blending luxury and performance in a way few vehicles of their time could match. Produced between 1987 and 1989 for the US market, the M6, alongside its Euro counterpart, the 635CSi, offers unparalleled driving experiences thanks to the hand-built BMW Motorsport Garching S38B35 engine. With only about 5,800 examples produced worldwide, these cars are not just vehicles; they are a collectible legacy. The manual transmission variant of the M6, in particular, commands a considerable premium, as enthusiasts recognize the value inherent in this 'manual-only' heritage.
At Crescent Wheels, we cherish the significant history and craftsmanship of the BMW M series. When you donate your E24 M6 or 635CSi, you contribute to a community that respects the legacy of these remarkable vehicles. A preventive maintenance mindset is essential; owners should ensure proper servicing, especially concerning the timing chains and engine authenticity verifications. We strongly recommend involving a qualified appraiser with documented credentials in BMW Motorsport or vintage M expertise for proper valuation and compliance with IRS regulations.
📖Generation guide
E24 M6 • 1987-1988
The US-market M6 represents a unique two-year limited production that stands out in the collector market. With a powerful 256hp S38B35 engine, it offers thrilling performance and luxury.
Euro M635CSi • 1984-1989
Though produced over several years, the M635CSi features a more powerful 286hp engine and is highly sought after by collectors. Federal compliance is vital for documentation.
635CSi (non-M) • 1984-1989
This variant features the M30B35 engine with less power at 182hp for US models. While valuable, it sits at a lower collector tier than the M6 and M635CSi.
Known issues by generation
Both the M6 (S38B35) and 635CSi (M30B35) have unique issues typical of the E24 chassis. Key concerns for the M6 include timing chain and guide replacement, often necessitating attention after 100,000-150,000 miles to prevent chain rattle. Throttle body synchronization is crucial for the S38 engine's performance. The M30-powered 635CSi frequently faces head gasket failures and cooling system issues. Rust is a chronic problem, especially near the A-pillar and in rocker panel seams, highlighting the importance of thorough inspections.
Donation value by condition + generation
The BMW M6 and 635CSi (E24) are appreciating assets in the collector market, with well-maintained examples commanding prices between $50,000 and $130,000, especially those with original paint and matching numbers. Collectors seek the hand-built authenticity of BMW Motorsport Garching vehicles, where both engine block and chassis numbers must align. Manual transmission variants of the M6 are particularly coveted, highlighting the significant premium associated with manual-only purity. It is essential to have proper appraisals conducted by a qualified expert familiar with BMW's history to establish appropriate values and ensure compliance with IRS donation requirements.
Donation process for this model
Donating your E24 M6 or 635CSi to Crescent Wheels involves several important steps. Given their value, we recommend securing a qualified appraiser with documented credentials in BMW Motorsport for the IRS Form 8283 Section B. Each donation typically crosses the $5,000 threshold, often by a margin of 10-60 times that amount. We emphasize the importance of enclosed transport for these vehicles to preserve their condition, alongside having the necessary documentation, including the BMW Motorsport Garching build plate and matching numbers verification for both engine and chassis.
New Orleans regional notes
As a proud owner of a BMW M6 or 635CSi in New Orleans, you are part of a vibrant community of vintage BMW enthusiasts. Local independent restorers specializing in BMW Motorsport models can be invaluable in maintaining your car's integrity. Events like Bimmerfest and Legends of the Autobahn connect you with fellow enthusiasts and provide opportunities for showcasing your vehicle. Given New Orleans' climate, secure, climate-controlled storage solutions are critical for preserving your car's condition against potential rust and environmental impacts.
FAQ
What maintenance should I prioritize for my E24 M6?
How do I authenticate my BMW M6 or M635CSi?
What is the manual transmission premium for the E24 M6?
What should I know about grey-market compliance for Euro imports?
Are there specific visual markers for factory color changes?
What level of appraisal is required for IRS purposes?
How crucial is the condition of my E24’s interior?
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.