Dinan Performance Spring Set for BMW F22 228i 230i and F32 428i 430i RWD

Dinan's performance spring set (D100-0928) is the rear-wheel-drive kit for the F22 228i/230i coupe and the F32 428i/430i coupe. The springs are CNC-wound from high-tensile chrome-silicon wire, shot-peened, and preset so they hold their height. They work with either conventional or factory electronic shocks.

On the F22 228i/230i, Dinan lowers the car 1/2 inch front and rear and raises spring stiffness by 50%. On the F32 428i/430i, the drop is 5/8 inch in front and 3/4 inch in the rear, with a 41% stiffer front rate and a 29% stiffer rear rate. The extra rate is there to cut body roll, reduce squat under acceleration and dive under braking, and keep the coupe flatter without turning it into a track-only setup.

Dinan titles the set for 2014-2021 228i, 230i, 428i, and 430i cars and is clear that it is not compatible with xDrive models, the 228i/230i convertible, or the 428i/430i convertible and Gran Coupe. The US table below is limited to RWD F22 and F32 coupes: 228i through 2016 and 230i from 2017 through 2021, plus 428i through 2016 and 430i from 2017 through 2020, which is the last US F32 coupe year.

Dinan recommends installing the matching supplemental ride quality and handling kit with the springs if you want the advertised ride height and ride quality. The springs can be installed alone, but Dinan will not warrant handling or ride complaints if the corresponding kit is left off. Labor is 7.8 hours. Emission code 5 applies. Dinan lists the package at 18 x 12 x 12 inches and 25 pounds; the distributor shipping weight is 22 pounds. Coverage follows Dinan's standard limited warranty: the remainder of the vehicle factory limited warranty (up to 4 years / 50,000 miles) or 2 years / unlimited miles, whichever is greater. The F22 store page and the later DNN-prefixed listing share this part number and redirect here.

Features

• RWD-only performance springs for F22 228i/230i and F32 428i/430i coupes
• F22: 1/2 inch lower front and rear, 50% stiffer
• F32: 5/8 inch lower in front and 3/4 inch lower in the rear
• F32 rate change: 41% stiffer in front and 29% stiffer in the rear
• Compatible with conventional and factory electronic shocks; about 7.8 hours of labor

What's Included

• Dinan Performance Spring Set (D100-0928)

Specifications

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Fitment Notes

• Rear-wheel-drive F22 and F32 coupes only.
• Not compatible with xDrive, F23/F33 convertibles, or F36 Gran Coupe models.
• Dinan recommends the corresponding supplemental ride quality and handling kit with this spring set.