2007 BMW Z4 vs. 2005 Rolls-Royce Silver Seraph
To start off, 2007 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Rolls-Royce Silver Seraph. In addition, the cost of maintenance, including insurance, on 2005 Rolls-Royce Silver Seraph would be higher. At 5,379 cc (12 cylinders), 2005 Rolls-Royce Silver Seraph is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (358 HP @ 7900 RPM) has 36 more horse power than 2005 Rolls-Royce Silver Seraph. (322 HP @ 3900 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2005 Rolls-Royce Silver Seraph.
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, 2005 Rolls-Royce Silver Seraph (490 Nm @ 3900 RPM) has 105 more torque (in Nm) than 2007 BMW Z4. (385 Nm @ 4900 RPM). This means 2005 Rolls-Royce Silver Seraph will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2005 Rolls-Royce Silver Seraph has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Rolls-Royce Silver Seraph will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2005 Rolls-Royce Silver Seraph | |
| Make | BMW | Rolls-Royce |
| Model | Z4 | Silver Seraph |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3199 cc | 5379 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 358 HP | 322 HP |
| Engine RPM | 7900 RPM | 3900 RPM |
| Torque | 385 Nm | 490 Nm |
| Torque RPM | 4900 RPM | 3900 RPM |
| Engine Compression Ratio | 11.5:1 | 10.0:1 |
| Top Speed | 273 km/hour | 225 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4100 mm | 5400 mm |
| Vehicle Width | 1790 mm | 1940 mm |
| Vehicle Height | 1300 mm | 1520 mm |
| Wheelbase Size | 2500 mm | 3120 mm |
