1958 Armstrong Siddeley Star Sapphire vs. 1991 BMW 730
To start off, 1991 BMW 730 is newer by 33 year(s). Which means there will be less support and parts availability for 1958 Armstrong Siddeley Star Sapphire. In addition, the cost of maintenance, including insurance, on 1958 Armstrong Siddeley Star Sapphire would be higher. At 3,990 cc (6 cylinders), 1958 Armstrong Siddeley Star Sapphire is equipped with a bigger engine. In terms of performance, 1991 BMW 730 (185 HP @ 5800 RPM) has 40 more horse power than 1958 Armstrong Siddeley Star Sapphire. (145 HP @ 4250 RPM) In normal driving conditions, 1991 BMW 730 should accelerate faster than 1958 Armstrong Siddeley Star Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1958 Armstrong Siddeley Star Sapphire weights approximately 178 kg more than 1991 BMW 730.
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, 1958 Armstrong Siddeley Star Sapphire (312 Nm @ 2000 RPM) has 52 more torque (in Nm) than 1991 BMW 730. (260 Nm @ 4000 RPM). This means 1958 Armstrong Siddeley Star Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 730. 1958 Armstrong Siddeley Star Sapphire has automatic transmission and 1991 BMW 730 has manual transmission. 1991 BMW 730 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1958 Armstrong Siddeley Star Sapphire will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1958 Armstrong Siddeley Star Sapphire | 1991 BMW 730 | |
| Make | Armstrong Siddeley | BMW |
| Model | Star Sapphire | 730 |
| Year Released | 1958 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3990 cc | 2986 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 145 HP | 185 HP |
| Engine RPM | 4250 RPM | 5800 RPM |
| Torque | 312 Nm | 260 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 97.1 mm | 89 mm |
| Engine Stroke Size | 90 mm | 80 mm |
| Engine Compression Ratio | 7.5:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1778 kg | 1600 kg |
| Vehicle Length | 4940 mm | 4920 mm |
| Vehicle Width | 1890 mm | 1850 mm |
| Vehicle Height | 1580 mm | 1420 mm |
| Wheelbase Size | 2900 mm | 2840 mm |
| Fuel Tank Capacity | 72 L | 90 L |
