Integrity of joins protects the entire passenger compartment.

The unique security modifications fitted to the BMW X5 Security Plus rely on high-precision moulded parts made from a special high-strength steel and a security glass laminate approximately three centimetres thick to protect occupants against attack with automatic weapons such as the AK-47.
The edges of the doors, the places where windows meet frames, and the joins between body panels are some of the most vulnerable areas of the vehicle to gunfire. But in the BMW X5 Security Plus, these areas are reinforced with steel armour, ensuring that neither bullets nor shrapnel can penetrate the passenger compartment.