2008 BMW 550 vs. 1991 Infiniti Q45
To start off, 2008 BMW 550 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 1991 Infiniti Q45 would be higher. At 4,799 cc, 2008 BMW 550 is equipped with a bigger engine. In terms of performance, 2008 BMW 550 (360 HP @ 6300 RPM) has 83 more horse power than 1991 Infiniti Q45. (277 HP @ 6000 RPM). In normal driving conditions, 2008 BMW 550 should accelerate faster than 1991 Infiniti Q45. With that said, vehicle weight also plays an important factor in acceleration. 1991 Infiniti Q45 weights approximately 90 kg more than 2008 BMW 550.
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, 2008 BMW 550 (490 Nm @ 3400 RPM) has 93 more torque (in Nm) than 1991 Infiniti Q45. (397 Nm @ 4000 RPM). This means 2008 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 1991 Infiniti Q45.
Compare all specifications:
| 2008 BMW 550 | 1991 Infiniti Q45 | |
| Make | BMW | Infiniti |
| Model | 550 | Q45 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 4494 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 277 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 490 Nm | 397 Nm |
| Torque RPM | 3400 RPM | 4000 RPM |
| Engine Bore Size | 93 mm | 93 mm |
| Engine Stroke Size | 88.3 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 246 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1660 kg | 1750 kg |
| Vehicle Length | 4870 mm | 5080 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2890 mm | 2890 mm |
| Fuel Tank Capacity | 70 L | 72 L |
