2005 BMW 645 vs. 1972 Citroen SM
To start off, 2005 BMW 645 is newer by 33 year(s). Which means there will be less support and parts availability for 1972 Citroen SM. In addition, the cost of maintenance, including insurance, on 1972 Citroen SM would be higher. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 168 more horse power than 1972 Citroen SM. (158 HP @ 5500 RPM). In normal driving conditions, 2005 BMW 645 should accelerate faster than 1972 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 443 kg more than 1972 Citroen SM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1972 Citroen SM, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 BMW 645 (447 Nm @ 3600 RPM) has 212 more torque (in Nm) than 1972 Citroen SM. (235 Nm @ 4000 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM.
Compare all specifications:
2005 BMW 645 | 1972 Citroen SM | |
Make | BMW | Citroen |
Model | 645 | SM |
Year Released | 2005 | 1972 |
Body Type | Convertible | Coupe |
Engine Position | Front | Front |
Engine Size | 4392 cc | 2670 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 2 valves |
Horse Power | 326 HP | 158 HP |
Engine RPM | 6100 RPM | 5500 RPM |
Torque | 447 Nm | 235 Nm |
Torque RPM | 3600 RPM | 4000 RPM |
Engine Bore Size | 92 mm | 87 mm |
Engine Stroke Size | 83 mm | 75 mm |
Fuel Type | Gasoline - Premium | Gasoline |
Drive Type | Rear | Front |
Transmission Type | Manual | Manual |
Number of Seats | 4 seats | 4 seats |
Number of Doors | 2 doors | 2 doors |
Vehicle Weight | 1895 kg | 1452 kg |
Vehicle Length | 4830 mm | 4900 mm |
Vehicle Width | 1860 mm | 1850 mm |
Vehicle Height | 1380 mm | 1330 mm |
Wheelbase Size | 2890 mm | 2950 mm |
Fuel Tank Capacity | 70 L | 89 L |