Sun Protection Glass reduces the heating of the inside when the car is in direct sunlight. Stronger tinted glass in the rear of the vehicle from the B-pillar backwards means that the glass in the rear compartment absorbs more of the sun's rays. The rear window and the rear side windows appear clear from the inside and darkened from the outside. The M Roof Rails in Black High-gloss securely support the multifunctional BMW roof rack unit. Twin longitudinal bars in accept fitment of approved storage accessories available from BMW Aftersales M Adaptive Suspension Sporty and comfortable. The adaptive M suspension, which has been lowered by 15 mm, automatically adapts to the road conditions and your driving style. M sport steering offers more direct steering feedback with lower effort.