Öhlins Road & Track Coilover Suspension – BMW 3-Series / M3 (E46) BMS MI30S1
Öhlins Road & Track Coilover Suspension – BMW 3-Series / M3 (E46) BMS MI30S1 is backordered and will ship as soon as it is back in stock.
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Öhlins Road & Track Coilover Suspension – BMW 3-Series / M3 (E4...
Öhlins Road & Track Coilover Suspension – BMW 3-Series / M3 (E46) BMS MI30S1
Part Number: BMS MI30S1 | Chassis Code: E46 | Fitment: BMW 3-Series (E46) 1998–2005 & BMW M3 (E46) 2000–2005
Over 40 years of motorsport engineering distilled into a street-ready coilover kit. The Öhlins Road & Track series delivers a genuine racing experience without sacrificing daily drivability — thanks to Öhlins' proprietary Dual Flow Valve (DFV) technology. Featuring separate compression and rebound damping adjustment, individual ride height adjustment, and an upside-down McPherson front strut, this kit unlocks the true potential of the E46 chassis. Springs are included. Corrosion-tested to ISO 9227 and backed by a 2-year limited warranty.
Vehicle Fitment
| BMW 3-Series (E46) | 1998 to 2005 |
| BMW M3 (E46) | 2000 to 2005 |
Note: For non-M models, original BMW M3 top mounts are required.
Technical Specifications
| Part Number | BMS MI30S1 |
| Technology | DFV — Dual Flow Valve |
| Damping Adjustment | Compression and rebound with single adjuster (front & rear) |
| Front Damper Type | McPherson strut — upside-down |
| Rear Damper Type | Conventional shock absorber |
| Front Spring Rate | 70 N/mm — included |
| Rear Spring Rate | 110 N/mm — included |
| Front Lowering Range | Approx. 15–35mm below standard |
| Rear Lowering Range | Approx. 5–30mm below standard |
| Top Mounts | Use with original top mounts (M3 top mounts required for non-M models) |
| Springs Included | Yes — front & rear springs included |
| Rebuildable | Yes — rebuildable for custom tuning |
| Corrosion Testing | ISO 9227 salt spray tested |
| Warranty | 2-year limited warranty |
| Homologation | TÜV certificate | Manufacturer confirmation (SUI) | GOCA (BE) |
General Features
- DFV technology (Dual Flow Valve) — Öhlins' proprietary damping system
- Individual height adjustment
- Rebuildable dampers for custom tuning
- Corrosion salt spray tested (ISO 9227)
- 2-year limited warranty
- Front & rear springs included
Front Features
- McPherson strut — upside-down design
- Compression and rebound damping with single adjuster
- Spring preload adjuster
- Separate ride height adjustment
- Approx. 15–35mm lower than standard (recommended setup)
- Spring rate: 70 N/mm — included
- Use with original top mounts (see note re. M3)
Rear Features
- Conventional shock absorber
- Compression and rebound damping with single adjuster
- Spring preload adjuster
- Separate ride height adjustment
- Approx. 5–30mm lower than standard (recommended setup)
- Spring rate: 110 N/mm — included
- Use with original top mounts
Purchased Parts Package Includes
- Coilover kit including springs and mounting parts
- C-Spanner (for spring preload adjustment)
- Owner's manual and mounting instructions
- Sticker set
What is DFV (Dual Flow Valve)?
DFV is Öhlins' proprietary damping technology that sets the Road & Track range apart from conventional coilovers. The dual flow valve provides consistent damping characteristics on both compression and rebound strokes — the damper fluid follows a consistent flow path in both directions. This means the wheel and tyre can rapidly return to the road surface after a bump, maximising grip and traction at all times.
Because DFV opens more quickly on minor road imperfections, ride comfort is surprisingly supple — more akin to an OEM strut than a typical coilover. Over undulating surfaces, the compliance of the R&T units allows the car to crest bumps and potholes while remaining stable and in control.
Why Öhlins Road & Track?
- ✅ Over 40 years of motorsport engineering heritage — trusted by factory race teams worldwide
- ✅ DFV technology — genuine race-car response with OEM-level daily comfort
- ✅ Upside-down McPherson front strut — reduced unsprung mass, sharper response
- ✅ Separate ride height and spring preload adjustment — front & rear
- ✅ Rebuildable, ISO 9227 corrosion-tested, 2-year limited warranty
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