A touring coach is fitted with a rear-mounted ski box (Skibox / Heckkoffer). What critical vehicle parameters and driving characteristics are altered by this attachment?

1. Overall vehicle length increases (must not exceed statutory 15.00m maximum for single-vehicle coaches), rear axle load increases, front axle is unweighted, and rear swing-out radius expands during turns
2. The vehicle maximum width expands beyond 3.50 meters
3. The ski box converts the coach into an articulated vehicle category
4. The engine cooling fan is automatically reversed