Hello, I have a question about the braking system in the XC90. There are at least 2 variants for the thick ship. A 16″ and a 17″ system. In some Fred I had read that all German versions should have installed the 17″ system and the 16″ system is intended for the US market and for EU countries, in which the law must already be implemented meaningfully (speed limit, etc.) Today I wanted to make my brake and see that I have a 16″ system inside (slice diameter 31 cm so 316 mm = 16″; 17″=336 mm). Although I should have actually had a 17″. But I am certainly not there. Now my question, one knows the creteria, which are the reason for a built-in 16″ or 17″ brake system? Is it dependent on the year of construction, engine or something like that? Mine is a 2.5T Bj. 12-04. mfg and thx Rob