2020 BMW M8 Convertible specifications
| M8 Coupe | M8 Competition Coupe | M8 Convertible | M8 Competition Convertible | |
| Engine type | S63B44T4 | S63B44T4 | S63B44T4 | S63B44T4 |
| Engine type | V8 | V8 | V8 | V8 |
| Induction | Turbocharged | Turbocharged | Turbocharged | Turbocharged |
| Cylinders | 8 | 8 | 8 | 8 |
| Valves per cylinder | 4 | 4 | 4 | 4 |
| Stroke mm | 88.3 | 88.3 | 88.3 | 88.3 |
| Bore mm | 89 | 89 | 89 | 89 |
| Displacement cm³ | 4,395 | 4,395 | 4,395 | 4,395 |
| Compression rate :1 | 10 | 10 | 10 | 10 |
| Engine power hp | 600 HP @ 6,000 RPM | 617 HP @ 6,000 RPM | 600 HP @ 6,000 RPM | 617 HP @ 6,000 RPM |
| Engine torque | 553 LB-FT @ 1,800 – 5,700 RPM | 553 LB-FT @ 1,800 – 5,860 RPM | 553 LB-FT @ 1,800 – 5,700 RPM | 553 LB-FT @ 1,800 – 5,860 RPM |
| 0-60 mph seconds | 3.1 | 3 | 3.2 | 3.1 |
| Top speed | 155 | 155 (189) | 155 (189) | 155 (189) |
| (optional) mph | -189 | |||
| Drive type | AWD | AWD | AWD | AWD |
| Length | 191.2 | 191.2 | 191.2 | 191.2 |
| Width | 74.9 | 74.9 | 74.9 | 74.9 |
| Width including mirrors | 84.1 | 84.1 | 84.1 | 84.1 |
| Height | 53 | 53 | 53 | 53 |
| Wheelbase | 111.1 | 111.1 | 111.1 | 111.1 |
| Turning radius | 19.5 | 19.5 | 19.5 | 19.5 |
| Shoulder width front | 57.2 | 57.2 | 57.2 | 57.2 |
| Shoulder room rear | 46.9 | 46.9 | 45.7 | 45.7 |
| Legroom front | 42.1 | 42.1 | 42.1 | 42.1 |
| Legroom rear | 29.5 | 29.5 | 29.5 | 29.5 |
| Headroom front | 38.9 | 38.9 | 38.9 | 38.9 |
| Headroom rear | 33.6 | 33.6 | 34.7 | 34.7 |
| Trunk volume | 14.8 | 14.8 | 12.4 | 12.4 |
| Fuel Tank capacity | 20.1 | 20.1 | 20.1 | 20.1 |
| Curb weight | 4,295 | 4,295 | 4,560 | 4,560 |
| Gross vehicle weight | 5,260 | 5,260 | 5,380 | 5,380 |
| Payload | 910 | 910 | 770 | 770 |