Hot topic, I risk being stoned, but I think it's important to deal with it, so I accept the risk. But first of all, I'll make a premise: I've had campers with rear wheel drive and single wheel, I've had campers with rear wheel drive and twin wheels, I've had campers with front wheel drive, but I've NEVER chosen a trip, a destination or a holiday thinking about the traction of my camper.
Front-wheel drive is the one we all know, given that our cars (I would say at least 80%) are practically all like this. In the event of loss of grip (cornering in the wet) the front-wheel drive is simple and intuitive to manage given that the driving wheels are also those that give direction, lifting your foot from the accelerator gives the front wheels the necessary grip and direction again. In the event of steep and slippery climbs, the front drive wheels can slip, precisely because the weight rests on the rear axle, which obviously does not happen in rear-wheel drive, which in these cases wins hands down. Rear wheel drive, for its part, is more "treacherous", and in the wet, and generally in situations of poor grip, the power of the wheels must be managed carefully, to avoid skidding (those who have had cars with rear wheel drive, I am thinking of my old Ford escort from the 70s, he knows that spinning when cornering in the wet was always around the corner). However, I must honestly say that in a camper, given that it is used purely on the road or on easy dirt roads, in normal situations critical conditions are not created, and the choice between front or rear wheel drive is, in my opinion, more philosophical than anything else . Maintain a good safety distance , better to exaggerate, adequate attention in case of snow (mount the chains on the driving wheels) or rain, a moderate speed, however, is always very important, much more than the type of traction.
Single or twin wheels. All campers touch the ground ONLY through the tyres, which support the weight of the vehicle and are subjected to strong stresses when cornering, accelerating, braking and in the event of impacts (holes, pavements ...). It is therefore essential to fit good quality tyres , have them checked periodically by the tire specialist, always keep them at the right pressure (a TPMS device is useful for monitoring). Motorhomes with twin wheels have the advantage of distributing the rear weight over the four tyres, and in the event of a puncture or explosion, the vehicle remains stable because it always has the surviving wheel to rely on. It is clear that the single rear wheels are penalized in these cases.