2008 BMW Z4 M Roadster Complete Service & Maintenance Schedule

Key Takeaways

• Engine & Drivetrain: The 2008 Z4 M Roadster features the 3.2L high-revving S54 inline-6 engine producing 330 horsepower, with a 6-speed manual transmission and rear-wheel drive.
• Service Indicator System: The vehicle uses a BMW Service Interval Indicator that displays "OIL SERVICE" or "INSPECTION" with the remaining distance until service is due. This system calculates intervals based on driving conditions rather than fixed mileage.
• M-Specific Oil Requirement: The S54 engine requires 10W-60 synthetic oil. Castrol TWS Motorsport 10W-60 Synthetic (BMW p/n 07 51 0 009 420) was the original approved oil.
• Inspection Structure: Services alternate between Inspection I and Inspection II. Inspection II includes all Inspection I items plus spark plugs, air filter, transmission fluid, and differential oil replacement.
• Factory Coverage: The 2008 Z4 M Roadster came with free scheduled maintenance for 48 months or 50,000 miles under the BMW Maintenance Program, plus a 4-year/50,000-mile basic warranty.

Understanding the Service Indicator System

The 2008 BMW Z4 M Roadster is equipped with a Service Interval Indicator that displays the next scheduled service type—"OIL SERVICE" or "INSPECTION"—along with the remaining distance until service should be performed . This is not a traditional fixed-mileage schedule; rather, the system calculates intervals based on factors such as engine coolant temperatures, engine speeds, trip length, and the number of vehicle starts .

Important: If the distance reading flashes with a minus sign, the service interval has been exceeded. In the interest of safety and reliability, BMW advises having the maintenance performed without delay when this occurs . The service indicator must be reset after each maintenance procedure is performed to compute the next service interval correctly .

Critical 1,200-Mile Running-In Service

While the 2008 Z4 M Roadster's initial 1,200-mile running-in service is a historical requirement for cars from new, for current owners, verifying that this service was performed is essential for a complete maintenance record. This service includes:

• Reading out the diagnostic system
• Changing the engine oil and filter while the engine is at operating temperature
• Using only Castrol TWS Motorsport 10W-60 Synthetic Oil

During the break-in period, the S54 engine requires careful running-in procedures to ensure long-term health.

Service Structure: Inspection I vs. Inspection II

The service schedule alternates between Inspection I and Inspection II. The Service Indicator Display does not differentiate between the two—it simply shows "INSPECTION." The distinction is based on mileage and service history, with a general rule of thumb being Inspection I around 30,000 miles and Inspection II around 60,000 miles.

Inspection I

Inspection I includes comprehensive vehicle checks and maintenance :

• Engine Compartment: Read out diagnostic system; check cooling system, coolant level, and antifreeze; check windshield washer fluid; check air conditioner operation; replace microfilter (reduce interval in dusty conditions); check brake fluid level
• Undercarriage: Change oil and oil filter while engine is at normal operating temperature; check transmission, rear axle, half-shafts, fuel tank, exhaust system, steering components; check brake pads and disc surfaces; check tire pressures and condition
• Additional checks of safety belts, airbag units, and road test

M-Specific Oil Change Procedure: Use only Castrol TWS Motorsport SAE 10W-60 Synthetic, or Castrol Formula RS 10-60 Synthetic oil (BMW p/n 07 51 0 009 420) .

Inspection II

Inspection II includes all Inspection I items plus the following additional operations:

• Replace air cleaner element (reduce interval in dusty conditions)
• Replace spark plugs
• Replace transmission fluid
• Replace differential oil
• Replace brake fluid (if not recently performed)
• Oxygen sensor replacement (every 120,000 miles)

Spark Plug Replacement

BMW recommends replacing spark plugs every 60,000 miles for the S54 engine . For the 2008 Z4 M Roadster, replacement is performed at every Inspection II service. OEM NGK Laser Platinum spark plugs are the recommended replacement, often replaced alongside Eldor ignition coils as a complete ignition service package .

Oxygen Sensors

Oxygen sensors must be replaced at 120,000-mile intervals to maximize fuel economy and minimize exhaust pollution . This is a mileage-based service not directly tied to the inspection cycle.

Factory Maintenance & Warranty Coverage

When new, the 2008 BMW Z4 M Roadster came with:

• Free Scheduled Maintenance: 48 months or 50,000 miles
• Basic Warranty: 4 years or 50,000 miles
• Corrosion Perforation Warranty: 12 years (144 months) or unlimited miles
• Roadside Assistance: 4 years or unlimited miles

Service Schedule Overview

Frequently Asked Questions

What type of engine oil does the 2008 BMW Z4 M Roadster require?

The S54 engine requires 10W-60 viscosity synthetic oil. The original approved oil was Castrol TWS Motorsport 10W-60 Synthetic (BMW part number 07 51 0 009 420) . Liqui Moly Synthoil Race Tech GT1 10W-60 is also recommended for S54 engines .

How often should I change the oil?

The Service Interval Indicator determines the optimal interval based on your driving conditions. BMW recommends checking the oil level whenever you add fuel and changing the oil at least once per year, regardless of mileage .

When should spark plugs be replaced?

BMW recommends replacing spark plugs every 60,000 miles for the S54 engine . This service is performed at every Inspection II.

When should oxygen sensors be replaced?

Oxygen sensors must be replaced every 120,000 miles .

What is the Service Interval Indicator?

The Service Interval Indicator is a display in the instrument cluster that shows "OIL SERVICE" or "INSPECTION" with the remaining distance until the next service. It calculates intervals based on actual driving conditions, including engine temperatures, speeds, trip length, and number of starts .

What does it mean if the display flashes with a minus sign?

If the distance reading flashes with a minus sign, the service interval has been exceeded, and BMW advises having the essential maintenance performed without delay .

How often should brake fluid be changed?

BMW recommends brake fluid replacement every two years from the vehicle's production date.

What warranty coverage did the 2008 Z4 M Roadster come with?

The vehicle came with 48 months or 50,000 miles of free scheduled maintenance, a 4-year/50,000-mile basic and powertrain warranty, and a 12-year/unlimited-mile corrosion perforation warranty .