Maybe they use the same size tires on the Barbus because it has different suspension than the Passion. The Barbus suspension makes the car lower, if I'm not mistaken.
When I get the Barbus suspension I'll ask about getting the front tires changed.
You Said:-Where I live there are pot holes everywhere, I'm not worried about the design, I suggested the wide tires to solve the pot hole problem.
If there are pot holes everywhere the last thing you need is the Barbus suspension, you will need extra strength glue for your false teeth and topee.........................
Try one first, thats if the Barbus suspension is the same as the Barbus suspension in europe.