{"product_id":"dinan-performance-spring-set-bmw-g20-g22-330i-m340i-m440i","title":"Dinan Performance Spring Set - BMW G20 \/ G22 330i \/ M340i \/ M440i xDrive","description":"\u003cp\u003eBMW's G20 and G22 platforms share a capable suspension architecture, but spring calibration varies significantly between the 330i, M340i, and M440i xDrive variants. Dinan's Performance Spring Set is engineered separately for each configuration, targeting the optimal lowering and stiffness increase per chassis rather than applying a single generic tune across all variants. Springs work with both conventional and factory electronic shocks.\u003c\/p\u003e\u003cp\u003eAll springs are CNC wound from high-tensile chrome silicon wire, shot-peened for stress relief, and preset to eliminate sag. The increased rates reduce rear squat under acceleration and front dive under braking, scaled appropriately to each variant's stock spring baseline.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDinan G20\/G22 Performance Spring Set Specs by Variant:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e+\u003c\/strong\u003e \u003cstrong\u003e330i RWD:\u003c\/strong\u003e 7-95% stiffer front, 34-92% stiffer rear — lowered 1-1\/8\" front, 3\/4\" rear\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e \u003cstrong\u003e330i xDrive:\u003c\/strong\u003e 7-95% stiffer front, 34-92% stiffer rear — lowered 5\/8\" front, 3\/4\" rear\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e \u003cstrong\u003eM340i RWD:\u003c\/strong\u003e 15% stiffer front and rear — lowered 1\" front and rear\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e \u003cstrong\u003eM340i xDrive:\u003c\/strong\u003e Negligible front change, 10% stiffer rear — lowered 1\" front and rear\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e \u003cstrong\u003eM440i xDrive:\u003c\/strong\u003e Negligible front change, 23% stiffer rear — lowered 1-1\/8\" front, 5\/8\" rear\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e CNC wound high-tensile chrome silicon wire, shot-peened for stress relief\u003cbr\u003e\u003cstrong\u003e+\u003c\/strong\u003e Preset to prevent spring sag\u003c\/p\u003e\u003cp\u003ePair with the Dinan Ride Quality \u0026amp; Handling Kit to maintain suspension travel and maximize comfort at the lowered ride height.\u003c\/p\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":51268684447990,"sku":"DNND100-0934","price":349.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2674\/6278\/files\/61f758e87bab1a1ccf70151e3ea6ec4bL.jpg?v=1784709285","url":"https:\/\/autotecknic.com\/products\/dinan-performance-spring-set-bmw-g20-g22-330i-m340i-m440i","provider":"AutoTecknic USA","version":"1.0","type":"link"}