2005 BMW 730 vs. 2008 Rolls-Royce Phantom Drophead Coupe
To start off, 2008 Rolls-Royce Phantom Drophead Coupe is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW 730. In addition, the cost of maintenance, including insurance, on 2005 BMW 730 would be higher. At 6,749 cc (12 cylinders), 2008 Rolls-Royce Phantom Drophead Coupe is equipped with a bigger engine. In terms of performance, 2008 Rolls-Royce Phantom Drophead Coupe (448 HP @ 5350 RPM) has 223 more horse power than 2005 BMW 730. (225 HP @ 6250 RPM) In normal driving conditions, 2008 Rolls-Royce Phantom Drophead Coupe should accelerate faster than 2005 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2008 Rolls-Royce Phantom Drophead Coupe weights approximately 830 kg more than 2005 BMW 730. 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, 2008 Rolls-Royce Phantom Drophead Coupe (531 Nm @ 3500 RPM) has 231 more torque (in Nm) than 2005 BMW 730. (300 Nm @ 3500 RPM). This means 2008 Rolls-Royce Phantom Drophead Coupe will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 730.
Compare all specifications:
| 2005 BMW 730 | 2008 Rolls-Royce Phantom Drophead Coupe | |
| Make | BMW | Rolls-Royce |
| Model | 730 | Phantom Drophead Coupe |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2982 cc | 6749 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Horse Power | 225 HP | 448 HP |
| Engine RPM | 6250 RPM | 5350 RPM |
| Torque | 300 Nm | 531 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90 mm | 84.6 mm |
| Engine Compression Ratio | 10.2:1 | 11.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1790 kg | 2620 kg |
| Vehicle Length | 5040 mm | 5840 mm |
| Vehicle Height | 1500 mm | 1640 mm |
| Wheelbase Size | 3000 mm | 3580 mm |
| Fuel Tank Capacity | 63 L | 100 L |
