1955 Armstrong Siddeley Sapphire vs. 1988 BMW Z1
To start off, 1988 BMW Z1 is newer by 33 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 2,492 cc (6 cylinders), 1988 BMW Z1 is equipped with a bigger engine. In terms of performance, 1988 BMW Z1 (175 HP @ 5800 RPM) has 90 more horse power than 1955 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 1988 BMW Z1 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 110 kg more than 1988 BMW Z1.
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, 1988 BMW Z1 (230 Nm @ 4000 RPM) has 70 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (160 Nm @ 1750 RPM). This means 1988 BMW Z1 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 | 1988 BMW Z1 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | Z1 |
| Year Released | 1955 | 1988 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 2492 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 85 HP | 175 HP |
| Engine RPM | 4400 RPM | 5800 RPM |
| Torque | 160 Nm | 230 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Bore Size | 70 mm | 82 mm |
| Engine Stroke Size | 100 mm | 78.8 mm |
| Engine Compression Ratio | 7.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 1360 kg | 1250 kg |
| Vehicle Length | 4580 mm | 3960 mm |
| Vehicle Width | 1730 mm | 1810 mm |
| Vehicle Height | 1570 mm | 1280 mm |
| Wheelbase Size | 2900 mm | 2450 mm |
