1979 BMW 633 vs. 2005 BMW Z4
To start off, 2005 BMW Z4 is newer by 26 year(s). Which means there will be less support and parts availability for 1979 BMW 633. In addition, the cost of maintenance, including insurance, on 1979 BMW 633 would be higher. At 3,210 cc (6 cylinders), 1979 BMW 633 is equipped with a bigger engine. In terms of performance, 1979 BMW 633 (194 HP @ 5500 RPM) has 26 more horse power than 2005 BMW Z4. (168 HP @ 6250 RPM). In normal driving conditions, 1979 BMW 633 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 1979 BMW 633 weights approximately 145 kg more than 2005 BMW Z4. 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, 1979 BMW 633 (285 Nm @ 4300 RPM) has 75 more torque (in Nm) than 2005 BMW Z4. (210 Nm @ 3500 RPM). This means 1979 BMW 633 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW Z4. 2005 BMW Z4 has automatic transmission and 1979 BMW 633 has manual transmission. 1979 BMW 633 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1979 BMW 633 | 2005 BMW Z4 | |
| Make | BMW | BMW |
| Model | 633 | Z4 |
| Year Released | 1979 | 2005 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3210 cc | 2171 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 194 HP | 168 HP |
| Engine RPM | 5500 RPM | 6250 RPM |
| Torque | 285 Nm | 210 Nm |
| Torque RPM | 4300 RPM | 3500 RPM |
| Engine Bore Size | 89 mm | 80 mm |
| Engine Stroke Size | 86 mm | 72 mm |
| Engine Compression Ratio | 9.3:1 | 10.8:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1470 kg | 1325 kg |
| Vehicle Length | 4760 mm | 4100 mm |
| Vehicle Width | 1760 mm | 1790 mm |
| Vehicle Height | 1390 mm | 1310 mm |
| Wheelbase Size | 2640 mm | 2500 mm |
| Fuel Tank Capacity | 70 L | 55 L |
