1955 Armstrong Siddeley Sapphire vs. 1976 BMW 630
To start off, 1976 BMW 630 is newer by 21 year(s). Which means there will be less support and parts availability for 1955 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1955 Armstrong Siddeley Sapphire would be higher. At 3,435 cc (6 cylinders), 1955 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1976 BMW 630 (173 HP @ 5500 RPM) has 48 more horse power than 1955 Armstrong Siddeley Sapphire. (125 HP @ 4700 RPM) In normal driving conditions, 1976 BMW 630 should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1955 Armstrong Siddeley Sapphire weights approximately 372 kg more than 1976 BMW 630.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1976 BMW 630 (251 Nm @ 4500 RPM) has 4 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (247 Nm @ 2000 RPM). This means 1976 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1955 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1955 Armstrong Siddeley Sapphire | 1976 BMW 630 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | 630 |
| Year Released | 1955 | 1976 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3435 cc | 2986 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 125 HP | 173 HP |
| Engine RPM | 4700 RPM | 5500 RPM |
| Torque | 247 Nm | 251 Nm |
| Torque RPM | 2000 RPM | 4500 RPM |
| Engine Bore Size | 90 mm | 89 mm |
| Engine Stroke Size | 90 mm | 80 mm |
| Engine Compression Ratio | 7.0:1 | 8.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 7 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1830 kg | 1458 kg |
| Vehicle Length | 5390 mm | 4760 mm |
| Vehicle Width | 1840 mm | 1760 mm |
| Vehicle Height | 1680 mm | 1390 mm |
| Wheelbase Size | 3380 mm | 2630 mm |
