15 - Excludes 4 wheel drive. 21 - All wheel/tire combinations are allowed which are released by the wheel type testing institution. The conditions in the wheel approval have to be kept, except when original suspension is required.Mazda 3, Typ BL (BM), nur Benzin, 2WD. VOGTLAND compound Spring Rate As the distance of spring travel reduces, the performance demands of a spring drastically increase. Derived from racing, the VOGTLAND compound spring consists of two different spring rates. The initial rate provides the proper preload necessary for proper suspension function during all road conditions, and the final rate is designed to provide the appropriate vehicle balance for neutral steering characteristics. Each spring is calibrated for every specific car model, and provides a balance between performance and comfort. This item is in the category "Vehicle Parts & Accessories\Car Tuning & Styling\Performance Suspension\Lowering Springs & Kits". The seller is "tunershop_at" and is located in this country: DE. This item can be shipped worldwide.