1984 BMW 725 vs. 1990 BMW Z1
To start off, 1990 BMW Z1 is newer by 6 year(s). Which means there will be less support and parts availability for 1984 BMW 725. In addition, the cost of maintenance, including insurance, on 1984 BMW 725 would be higher. At 2,495 cc (6 cylinders), 1984 BMW 725 is equipped with a bigger engine. In terms of performance, 1990 BMW Z1 (175 HP @ 5800 RPM) has 27 more horse power than 1984 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 1990 BMW Z1 should accelerate faster than 1984 BMW 725.
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, 1990 BMW Z1 (230 Nm @ 4000 RPM) has 15 more torque (in Nm) than 1984 BMW 725. (215 Nm @ 4000 RPM). This means 1990 BMW Z1 will have an easier job in driving up hills or pulling heavy equipment than 1984 BMW 725.
Compare all specifications:
| 1984 BMW 725 | 1990 BMW Z1 | |
| Make | BMW | BMW |
| Model | 725 | Z1 |
| Year Released | 1984 | 1990 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 148 HP | 175 HP |
| Engine RPM | 5500 RPM | 5800 RPM |
| Torque | 215 Nm | 230 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 82 mm |
| Engine Stroke Size | 71.6 mm | 78.8 mm |
| Engine Compression Ratio | 9.6:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Length | 4870 mm | 3960 mm |
| Vehicle Width | 1810 mm | 1810 mm |
| Vehicle Height | 1440 mm | 1280 mm |
| Wheelbase Size | 2810 mm | 2450 mm |
