2020 Bmw M2 Competition – Maximizing Performance And Long-Term
The 2020 BMW M2 Competition is widely regarded as one of the best driver’s cars of the modern era, featuring the potent S55 twin-turbo engine. This guide provides a deep dive into essential maintenance, common mechanical pitfalls like the crank hub, and the best performance modifications for the street and track.
You probably bought your 2020 bmw m2 competition because you value a pure, analog driving experience in a digital world. It is a car that rewards a skilled hand, but it also demands a proactive approach to maintenance to keep that S55 engine singing. Whether you are a weekend track warrior or a daily commuter, understanding the nuances of this chassis is the key to a long-lasting relationship with your M-car.
In this guide, we will walk through the critical service intervals, the “must-do” reliability fixes, and the performance upgrades that actually make a difference. We are focusing on practical, hands-on advice that moves beyond the owner’s manual. Let’s ensure your M2 stays as sharp as the day it left the showroom floor.
From choosing the right oil weights to addressing the infamous crank hub concerns, we have you covered. Our goal is to empower you with the knowledge to either do the work yourself or speak the same language as your specialized technician. Let’s dive into the mechanical soul of this incredible machine.
The Mechanical Soul of the 2020 bmw m2 competition
The transition from the standard M2 to the Competition model brought the S55 engine from the M3 and M4 into a smaller, more nimble package. This 3.0-liter inline-six uses two mono-scroll turbochargers to deliver 405 horsepower and 406 lb-ft of torque. However, because it is a high-performance engine, it operates under extreme thermal stress and high internal pressures.
Unlike the previous N55 engine, the S55 features a closed-deck block design, which provides significantly more rigidity for high boost levels. It also utilizes a sophisticated cooling system with three radiators, an oil cooler, and a dedicated charge-air cooler. Understanding this complexity is vital before you start turning wrenches or adding tuning software.
The chassis itself, the F87, is a masterpiece of balance, but it relies heavily on its electronic differential (Active M Differential) to put power down. Maintaining the fluid in this unit is just as important as changing your engine oil. If you ignore the drivetrain fluids, you risk expensive repairs down the road.
The S55 Engine Architecture
The S55 engine utilizes Valvetronic and Double-VANOS technology to manage valve timing and lift. This allows for a broad powerband but adds complexity to the cylinder head. Always ensure you use high-quality, full-synthetic oil to prevent sludge buildup in these sensitive components.
One unique feature of the 2020 bmw m2 competition engine is its magnesium oil pan. While lightweight, it requires a specific torque procedure for the drain plug. Always use a new crush washer to prevent leaks, as the aluminum-to-magnesium contact can lead to galvanic corrosion if moisture is trapped.
Essential Maintenance for the DIY Mechanic
Maintaining a 2020 bmw m2 competition requires more than just following the “Condition Based Service” (CBS) lights on your dashboard. For enthusiasts, we recommend a more frequent schedule to ensure the engine and drivetrain remain bulletproof. Clean fluids are the cheapest insurance policy you can buy for a high-strung BMW.
Engine oil should be changed every 5,000 miles, rather than the 10,000-mile interval BMW suggests. We recommend using a high-quality 0W-30 or 5W-30 oil that meets the BMW LL-01 or LL-01FE specifications. Brands like Motul, Liqui Moly, or Pennzoil Euro are popular choices among the community for their shear stability.
- Oil Filter: Use only OEM (Mann or Mahle) filters to ensure proper flow and filtration.
- Spark Plugs: Replace these every 20,000 to 30,000 miles, especially if you are running a performance tune.
- Brake Fluid: Flush every 2 years with a high-boiling-point fluid like Castrol SRF if you track the car.
Drivetrain and Differential Service
The Active M Differential is a marvel of engineering, but it shears fluid quickly under aggressive driving. We recommend changing the differential fluid every 30,000 miles. Use the specific BMW MSP/A fluid or a high-quality 75W-140 synthetic gear oil recommended for limited-slip units.
If you have the 6-speed manual transmission, the fluid is relatively easy to swap. For those with the 7-speed M-DCT (Dual Clutch Transmission), the process is more involved. It requires a specific filling procedure at a set temperature, often requiring diagnostic software to monitor the transmission fluid temp during the process.
Addressing the Crank Hub Concern
If you spend any time on BMW forums, you have likely heard of the “spun crank hub.” On the S55 engine, the crank hub is a multi-piece design held together by friction. In rare cases, usually under high torque or aggressive downshifts, the hub can slip, causing the engine to go out of time. While it sounds scary, there are ways to mitigate this risk.
For most owners of a stock 2020 bmw m2 competition, the risk is very low. However, if you plan on adding a Stage 2 tune or upgrading the turbos, a crank hub “fix” is highly recommended. This usually involves installing a pinned or keyed hub that physically locks the components together, preventing any chance of rotation.
Installing a crank hub fix is a labor-intensive job that involves removing the front of the engine. It is a “peace of mind” modification for those chasing big power. If you decide to stay stock, simply avoid money shifts (accidental high-RPM downshifts) and “kick-down” shifts in the DCT to keep the hub secure.
Charge Pipe Upgrades
Another common failure point on the S55 engine is the plastic charge pipes. These carry pressurized air from the turbos to the intercooler. Over time, the plastic becomes brittle and can burst under boost. Replacing these with aluminum charge pipes is a relatively easy DIY job that prevents a potential roadside breakdown.
When installing new charge pipes, ensure the O-rings are seated correctly. A boost leak will cause a “Drivetrain Malfunction” warning and a significant loss of power. Using a bit of silicone lubricant on the seals will help them slide into place without tearing.
Performance Modifications: Unlocking the F87
The 2020 bmw m2 competition is essentially a detuned M4, meaning there is a lot of headroom for power. The most common first step is a software flash. Platforms like Bootmod3 or MHD allow you to upload a new engine map via the OBDII port in minutes. This can easily add 50-80 horsepower on a completely stock car.
To support higher power levels, you should look into hardware upgrades. A high-flow intake system and a mid-pipe exhaust upgrade not only help the engine breathe but also improve the exhaust note. The S55 is often criticized for its “raspy” sound, and an equal-length mid-pipe is the best way to give it a deeper, more traditional inline-six howl.
- Stage 1 Tune: No hardware required, massive torque gains.
- Downpipes: High-flow or catless downpipes reduce backpressure and heat.
- Intercooler: An upgraded “J-pipe” and top-mount intercooler keep intake temps low.
Suspension and Handling
While the M2 Competition handles beautifully, it can feel a bit “busy” over rough pavement. Many owners opt for a set of high-quality coilovers, such as the Ohlins Road & Track or KW V3. These allow you to fine-tune the ride height and damping to suit your local roads or track preferences.
Don’t forget about the “camber plates.” The stock M2 lacks significant front camber adjustment. If you find yourself wearing out the outside edges of your front tires at the track, adding adjustable camber plates will allow you to dial in -2.5 to -3.0 degrees of camber, significantly improving turn-in and tire longevity.
Interior Tech and Daily Usability
Inside the 2020 bmw m2 competition, you get the iDrive 6 system, which is intuitive and responsive. One of the best “hacks” for this car is using an app like BimmerCode. With a simple Bluetooth OBDII adapter, you can customize hidden features, such as disabling the legal disclaimers, changing the ambient lighting, or even folding the mirrors automatically when you lock the car.
If your car didn’t come with it, you can also enable Full-Screen Apple CarPlay via coding. This makes the interior feel much more modern. For those who find the seatbelt “chime” annoying while moving the car in the driveway, that can be coded out as well, though we always recommend wearing your belt while driving on public roads.
The seats in the Competition model are the “M Sport” buckets, which offer excellent lateral support. To keep the Dakota leather looking new, use a high-quality leather cleaner and conditioner every few months. This prevents the bolsters from cracking due to the friction of entering and exiting the vehicle.
Safety First: Working on Your M2
Before you get under your car, safety is paramount. Never rely solely on a floor jack. Always use jack stands placed at the factory jacking points. The M2 uses specific plastic jack pads; using a flat jack stand can crush these, so consider buying a “jack pad adapter” for your floor jack.
When working on the S55 engine, remember that the fuel system is under extremely high pressure. If you are replacing injectors or working on the fuel rail, you must bleed the pressure properly to avoid injury. Always wear eye protection and work in a well-ventilated area when dealing with fluids or fuel.
Lastly, if you are unsure about a specific torque spec, look it up. For example, the wheel lug bolts on the M2 should be torqued to 140 Nm (103 lb-ft). Over-tightening can stretch the bolts, while under-tightening can lead to a wheel coming loose. Accuracy is the hallmark of a great mechanic.
Frequently Asked Questions About the 2020 bmw m2 competition
Is the crank hub issue common on the 2020 model?
While the 2020 model year still uses the same hub design as earlier S55 engines, the failure rate is statistically very low on stock cars. Most failures occur on cars with significantly increased torque from aftermarket tuning or those subjected to extreme “kick-down” shifts in DCT models.
What is the best oil for a tuned M2 Competition?
For a tuned car, many enthusiasts prefer a slightly heavier oil like 5W-40 to provide better protection under high heat. Ensure it still meets BMW’s LL-01 standards. Liqui Moly Molygen or Motul 8100 X-Cess are highly regarded choices in the BMW community.
Can I fit 18-inch wheels over the stock brakes?
The 2020 BMW M2 Competition comes with large 400mm front rotors and 6-piston calipers (the “Silver” or “Grey” brakes). Most 18-inch wheels will not clear these brakes. You generally need 19-inch wheels, though a few very specific motorsport 18s might fit with tight clearances.
How often should I change the spark plugs?
For a stock car, BMW recommends every 30,000 miles. However, if you have a Stage 1 or Stage 2 tune, you should reduce that to every 15,000 to 20,000 miles. Many owners also switch to a “one-step colder” plug, like the NGK 97506, gapped to.022 inches for better performance under boost.
Final Thoughts for the M2 Owner
Owning a 2020 bmw m2 competition is a rewarding experience that connects you to the road in a way few modern cars can. By staying on top of your maintenance schedule and addressing known weak points like the charge pipes, you can enjoy this car’s performance for years to come. Remember that a well-maintained BMW is a reliable BMW.
Whether you are chasing lap times at the track or simply enjoying a spirited Sunday drive, the key is to listen to your car. Pay attention to new sounds, stay diligent with fluid changes, and don’t be afraid to get your hands dirty. The F87 chassis is a modern classic, and with the right care, it will remain a benchmark for driving dynamics.
Stay safe on the roads, keep your tools sharp, and enjoy every redline shift. Your M2 was built to be driven, so get out there and make the most of it! Stay safe and stay fast!
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