Dinan Performance Spring Set - BMW M550i G30 2018-2019

Dinan D100-0932

Dinan Performance Spring Set - BMW M550i G30 2018-2019


Suspension systems that not only transform the stance of the vehicle but also maintain ride quality and improve upon handling are what Dinan suspensions are known for. This is accomplished by pairing springs sets with bump stops, spring perches or both to maintain suspension travel resulting in a smooth ride while also improving mechanical grip and handling. This is what makes Dinan suspension systems unique. While we are able to sell each component separately it is highly recommend that both the spring sets and the supplemental ride quality and handling kits are used in tandem in order to maintain the Dinan quality standards our customers are used to. Experience the Dinan difference with this combination and enjoy the ride it provides.

Dinan's Performance Spring set for the G30 M550i provides greater control over body roll by virtue of carefully calibrated spring rates. Additionally, Dinan lowers the M550i by a 3/4" in the front and rear for improved suspension geometry and an even more aggressive stance. The Dinan springs are CNC wound with high tensile chrome silicon wire and shot peened for stress relief to last the life of the car. The 15% increase in stiffness will reduce the rear suspension compression under acceleration and front suspension compression (or dive) under braking, giving your car a more controlled feel. The Dinan performance springs will also provide a noticeable improvement in grip, for high speed driving situations that will inspire confidence in your car's capabilities. The reduced body roll makes the steering more responsive to driver input and will be noticed at speeds as low as 20 mph, up to the top speed of the vehicle.


  • Maximum Outside Diameter: 4.66" Front | 4.42" Rear
  • Spring Rate: 446 LB/IN Front| 245 LB/IN Rear
  • Spring Material: High Tensile Chrome Silicon
  • Free Height: 11.1" Front | 12.25" Rear
  • Wire Diameter: 0.593" Front | 0.485" Rear
  • Maximum Inside Diameter: 3.47" Frong | 3.45" Rear
  • Spring Color: Blue


  • Included Notes 2 front springs, 2 rear springs
  • Required Items Highly Recommended: D193-3071 - Supplemental Ride Quality & Handling Kit for BMW G30 M550i (see product description for details


    Dinan Performance Spring sets should be purchased and installed with the corresponding Ride Quality and Handling Kit to achieve the advertised ride height, performance, and ride quality. While not explicitly required, if the matching component is not purchased and installed you will get less than favorable results in the form of poor ride quality and improper handling traits. While we will maintain a full warranty on product defects, any claims against the car’s improper handling/ride quality traits due to not purchasing the corresponding handling kit will not be warranted.


    • 2018 M550i G30
    • 2019 M550i G30


    Images are for representation purpose only and may differ depending on application.