The BMW X5 30xd with a Swift Challenger 635 with an actual weight of 1680 kg is in general a good match and suitable for all journeys on all kinds of roads.
The motor preformance of the BMW is in general very good. And also the weight of the Swift with a User Payload (160 kg in the caravan and 200 kg in the car including passengers), is good.
Flat roads
Towing Performance
302
384
Mountains
Risk of snaking
363
181
Weight ratio: 71% (78% of kerbweight)
1680 kg
2370 kg
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BMW X5 30xd Swift Challenger 635
Actual Weights
Swift Challenger 635: 1680 kg.
BMW X5 30xd: 2370 kg.
Noseweight: 90 kg.
Actual weight ratio: 71%.
Performance
The engine's performance is generally very good on flat roads (performance score to compare 302 points).
Speeds of 89 mph (143 km/h) to 92 mph (149 km/h) are often quite possible.
There is a lot of power at low engine speeds (score to compare 384 points).
Higher revs (1600 rpm) are usually not necessary on flat roads, under most circumstances.
Acceleration from 0-62 mph (0-100 km/h) is theoretically possible in 11.9 sec.
In the mountains the performance is generally very good (score to compare 363 points).
No problems are to be expected on steep mountain roads (up to 30%). Not even on Hill starts.
On motorway inclines hardly any higher revs are needed.
A speed of 79 mph (128 km/h) is usually possible on most motorway inclines.
Weight
The towing limit of the BMW is more than sufficient (check this in your vehicle documents).
If you passed your driving test after 1 January 1997, you will need a B+E driving license.
Weight ratio between the laden caravan and the loaded car is 71%. Common in the UK: the weight ratio between the laden caravan and the kerbweight of the car is 78%.
The chance of snaking is relatively small at normal speed, if the caravan is well loaded.
Recommended noseweight is 90 kg.
Safe speed up to 62 mph (100 km/h).
Stability and safety score to compare is 181 points.
If the caravan starts to snake you should reduce your speed and slow down directly! Lift your feet off the accelerator and brake gradually. Hold the steering wheel into a fixed position.
Conclusion
Performance is very good.
Safe driving is possible.
It's a perfect match!
Influence of User Payload on stability
Weight distribution and noseweight are vital in obtaining a stable caravan.