First of all thanks to Chameo for the Camper-model and to ChaosCoreTech for the wheels!
I needed a nice camper-model, which I found @Chameo. The only thing missing in this model was the front wheel for manouvering (also good to make the model stand even ;-). So I added a simple version here.
I followed the advise of Chameo to take the wheels from ChaosCoreTech, but I wanted to have separate tires and rims, so I could print the tires in flexible TPU ;-). Not that it's important for the model, but it made me feel better ;-). The complete wheel is now fully round and it doesn't have holes in the back any more.
The model is very fragile. I printed it double-size, which is absolute minimum from my point of view. Still the back side of the camper especially is way too thin, e.g. around the window. You could try to either print even bigger or to combine 2x the same part with a little shift, in order to get a "thicker" part. Nevertheless, if your printer has good quality, you will be able to get the print in one piece - but be gentle with it ;-).
I actually forgot how I resized the wheels, but I think it was about 30%.
The front wheel (staender.stl) is the right size, if you print the camper double size.
For all the parts of the camper you will find an orientation which lets you print it without supports.