BMW M3 (E30) (1986-87)

The BMW M3 (E30), a classic sports car from the 1990s, has its fair share of common issues. Whether you’re a proud owner or considering buying one, here are some things to be aware of:
1. Overheating and Poor Radiator System: The E30 M3 can suffer from overheating issues due to a suboptimal radiator system. Regular maintenance and monitoring coolant levels are essential to prevent engine damage.
2. VANOS or Valve Timing Issues: The VANOS system, responsible for adjusting valve timing, can develop problems. Symptoms include poor performance, rough idling, and decreased power. Regular inspections and timely repairs are crucial.
3. High Oil Consumption: Some E30 M3s exhibit excessive oil consumption. Keep an eye on oil levels and address any leaks promptly.
4. Automatic Transmission Issues: If you have an automatic transmission E30 M3, be aware of potential issues such as shift problems or slipping. Regular fluid changes and proper maintenance can mitigate these problems.
5. RCPA Reinforcement and Cracks: The rear subframe on E30 M3s can crack or fail, affecting handling and safety. Look for reinforcement plates or consider adding them if they’re not already installed.
6. Rough Idle: A faulty idle control valve can lead to rough idling. Regular cleaning or replacement can improve engine performance.
7. Rod Bearings: E30 M3s are known for rod bearing issues. Regular inspection and replacement can prevent catastrophic engine failure.
8. Timing Chain Issues: Another common problem is timing chain stretch. If you hear a rattling noise from the engine, it might be time to address the timing chain.
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Generations
The **BMW M3** has seen **six generations** since its inception. Let's take a closer look at each of them:

1. **E30 Generation (1986–1991)**:
- The **E30 M3** was the first BMW M3, based on the **E30 3 Series**. It was introduced in **1986** and produced until **1991**.
- Designed as a **homologation special** to meet racing regulations, it featured a **2.3–2.5 L S14 I4 engine** and was available as a **2-door coupé** or a limited volume of **convertibles**.
- Notable aerodynamic changes included a flattened rear window, a raised tailgate, and glued-in windscreen. The M3 achieved a relatively low drag coefficient of **Cd = 0.33**.
- Transmission options included a **Getrag 265 5-speed manual** with a dogleg version for European models and wider gear spacing for North American models¹.

2. **E36 Generation (1994–1999)**:
- The **E36 M3** was produced from **1994** to **1999**.
- It featured a more powerful **3.0 L inline-six engine** and was available as a **coupé**, **convertible**, and later as a **saloon**.
- The E36 M3 is known for its balanced handling and driving dynamics.

3. **E46 Generation (2000–2006)**:
- The **E46 M3** was produced from **2000** to **2006**.
- It came with a **3.2 L inline-six engine** producing more power than its predecessor.
- Available as a **coupé** and **convertible**, the E46 M3 is highly regarded for its performance and handling.

4. **E90/E92/E93 Generation (2007–2013)**:
- The **E90 M3** (saloon), **E92 M3** (coupé), and **E93 M3** (convertible) were produced from **2007** to **2013**.
- Powered by a **4.0 L V8 engine**, these models offered impressive performance.
- The E92 M3 is particularly celebrated for its high-revving V8 engine.

5. **F80 Generation (2014–2020)**:
- The **F80 M3** was produced from **2014** to **2020**.
- It returned to a **straight-six engine**, this time with **twin-turbocharging**, producing substantial power.
- Available as a **saloon** and, for the first time, as an **estate (Touring)** alongside the saloon variant.

6. **G80 Generation (2021–present)**:
- The **G80 M3** is the latest generation, introduced in **2021**.
- It features a **3.0 L inline-six engine** with **twin-turbocharging** and is available in both **rear-wheel-drive** and **all-wheel-drive** configurations.
- The G80 M3 continues the legacy of high-performance driving associated with the M3 name.

The BMW M3 has evolved over the years, maintaining its status as an iconic, performance-driven sports car.
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Variants
The **BMW M3** has seen several variants over the years. Let's explore them:

1. **Standard M3**:
- The standard **BMW M3** is a high-performance sports sedan. It has been produced in various generations, each with its own unique features and improvements.

2. **M3 Competition**:
- The **M3 Competition** is an enhanced version of the standard M3.
- It boasts a more powerful engine, producing **510 horsepower**, making it the most potent M3 ever.

3. **M3 Touring** (Estate):
- In **2022**, BMW introduced the **M3 Touring**, which is the first-ever estate (wagon) version of the M3.
- This variant combines the practicality of an estate car with the performance of the M3.

So, in summary, there are at least **three** notable variants of the BMW M3: the standard M3, the M3 Competition, and the M3 Touring. Each offers a distinct driving experience and caters to different preferences.
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Engines
The **BMW M3** has seen a variety of engines across its different generations. Let's explore the engines used in each M3 model:

1. **E30 Generation (1986–1991)**:
- The original **E30 M3** was powered by a **2.3–2.5 L S14 I4 engine**.
- This four-cylinder engine was designed to meet racing regulations and homologation requirements.

2. **E36 Generation (1994–1999)**:
- The **E36 M3** featured a **straight-six engine**.
- The exact displacement varied across different markets, but it was generally around **3.0 L**.

3. **E46 Generation (2000–2006)**:
- The **E46 M3** continued with a **straight-six engine**, now with a **3.2 L displacement**.
- It was known for its high-revving characteristics and impressive performance.

4. **E90/E92/E93 Generation (2007–2013)**:
- The **E90 M3** (saloon), **E92 M3** (coupé), and **E93 M3** (convertible) were powered by a **4.0 L V8 engine**².
- This eight-cylinder engine delivered **430 horsepower**, making it the quickest M3 up to that point.

5. **F80 Generation (2014–2020)**:
- The **F80 M3** returned to a **straight-six engine**, but this time with **twin-turbocharging**.
- The **S55 twin-turbo straight-6 engine** produced impressive power and torque.

6. **G80 Generation (2021–present)**:
- The latest **G80 M3** also features a **straight-six engine** with **twin-turbocharging**.
- The **S58 engine** powers the M3, available in both **rear-wheel-drive** and **all-wheel-drive** configurations.

In summary, the BMW M3 has evolved through various engine configurations, from four-cylinder to straight-six and even a V8, maintaining its status as an iconic high-performance sports car.
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Spares
Certainly! If you're looking for **BMW M3 E30** spare parts in the **UK** or **Ireland**, there are several options available:

1. **BMW Parts Online**:
- You can explore a wide range of **E30 parts** at **BMW Parts Online**. They offer components such as fuel pumps, water pumps, ball joints, axle mounts, brake parts, and more.
- Whether you're a professional garage, a BMW enthusiast, or a driver seeking affordable alternatives for sourcing BMW parts, they can assist you¹.

2. **BMW Spare Parts Catalogue**:
- Visit the **BMW Genuine Spare Parts Catalogue** online. Choose the year of your vehicle (E30) and discover various spare parts for your model.
- If you're unsure, search for your vehicle using your **VIN** or **model code** to avoid any mistakes.

3. **Car-Parts.ie**:
- Check out the **Car-Parts.ie** online shop for spare parts specifically for the **BMW 3 Saloon (E30)**.
- You'll find the components you need for your E30 model there.

4. **Autodoc**:
- Autodoc offers auto parts and accessories for the **BMW 3 Series E30**. Their extensive catalog includes durable parts suitable for your fancy **BMW 3 Convertible (E30)**.

5. **Everything M3s**:
- **Everything M3s** specializes in BMW M3 E30 parts. They provide custom differentials, servicing, performance upgrades, engine rebuilds, and underbody restoration.