1956 Armstrong Siddeley Sapphire vs. 1991 BMW 525
To start off, 1991 BMW 525 is newer by 35 year(s). Which means there will be less support and parts availability for 1956 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1956 Armstrong Siddeley Sapphire would be higher. At 2,496 cc (6 cylinders), 1991 BMW 525 is equipped with a bigger engine. In terms of performance, 1991 BMW 525 (143 HP @ 4800 RPM) has 58 more horse power than 1956 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 1991 BMW 525 should accelerate faster than 1956 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1991 BMW 525 weights approximately 200 kg more than 1956 Armstrong Siddeley Sapphire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1991 BMW 525 (260 Nm @ 2200 RPM) has 100 more torque (in Nm) than 1956 Armstrong Siddeley Sapphire. (160 Nm @ 1750 RPM). This means 1991 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 1956 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1956 Armstrong Siddeley Sapphire | 1991 BMW 525 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | 525 |
| Year Released | 1956 | 1991 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2307 cc | 2496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 143 HP |
| Engine RPM | 4400 RPM | 4800 RPM |
| Torque | 160 Nm | 260 Nm |
| Torque RPM | 1750 RPM | 2200 RPM |
| Engine Bore Size | 70 mm | 80 mm |
| Engine Stroke Size | 100 mm | 83 mm |
| Engine Compression Ratio | 7.5:1 | 22.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1360 kg | 1560 kg |
| Vehicle Length | 4580 mm | 4730 mm |
| Vehicle Width | 1730 mm | 1760 mm |
| Vehicle Height | 1570 mm | 1420 mm |
| Wheelbase Size | 2900 mm | 2770 mm |
