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Description

BMW E91/E93 3 Series Touring/Convertible RWD (05-11) BC Racing RM coilover kit 5.5/10 kg/mm

The BC Racing RM coilover kit E91 E93 (part number I-17-RM-MA) is a coilover kit adjustable in height and damping, also simply called a coilover, for the BMW 3 Series E91 Touring and E93 Convertible with rear-wheel drive, excluding the M3, model years 2005 to 2011. The spring rate is 5.5 kg/mm front and 10 kg/mm rear.

At BC Racing, the RM series is intended for track days, hill climbs and tarmac rally. On MacPherson struts BC Racing uses an inverted monotube, on other suspension types an upright monotube, in each case with a digressive piston and fully synthetic oil with a very high viscosity index.

For the E91 Touring and E93 Convertible with rear-wheel drive, the kit comes with 5.5 kg/mm front and 10 kg/mm rear. It is intended for the regular E91 and E93, not for the M3.

Key benefits

• Made for track days and hill climbs: and also for tarmac rally.
• Digressive piston: tuned for track use.
• Fully synthetic oil: with a very high viscosity index.
• Inverted monotube on MacPherson struts: upright monotube on other suspension types.
• 30-click damping adjustment: compression and rebound together.
• Pillowball top mounts or camber plates at the front: rubber or the original mounting at the rear.
• Stepless ride height adjustment: via the damper body.
• Rebuildable: the dampers can be rebuilt.

Suitable for

BMW 3 Series E91 Touring and E93 Convertible with rear-wheel drive, model years 2005 to 2011; not for the M3, the four-wheel-drive xDrive versions, the E90 Sedan and the E92 Coupe

• Track days with an E91 Touring or E93 Convertible
• Hill climbs and tarmac rally
• Track cars that see little use on the road

Technical specifications

• Manufacturer: BC Racing
• Part number: I-17-RM-MA
• Series: RM, for track days, hill climbs and tarmac rally
• Spring rate front/rear: 5.5/10 kg/mm
• Damper design: inverted monotube on MacPherson struts, upright monotube on other suspension types; digressive piston; fully synthetic oil with a very high viscosity index
• Damping: 30 clicks, compression and rebound simultaneously
• Ride height: steplessly adjustable via the damper body
• Top mounts: pillowball top mounts or camber plates at the front, rubber or original mounting at the rear
• Contents: dampers and springs front and rear, lower mounts, top mounts where applicable, adjustment spanners and warranty card with serial number
• Warranty: 1 year on manufacturing defects; noise from track use is not covered by the warranty

Fitting and delivery

The kit is vehicle-specific and replaces the original dampers and springs. We recommend having it fitted by an experienced mechanic. On some cars the pillowball top mount at the front requires a small modification to the upper mounting; if in doubt, contact us. BC Racing advises periodic greasing for the RM and ZR series and recommends them less for road use than the BR, DS, ER or ZX. After adjusting the height, have the wheel alignment set again. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is not in stock at BC Racing, you can still order and we will tell you the delivery date.

The BC Racing RM kit I-17-RM-MA for the BMW E91 and E93 works with fully synthetic oil with a very high viscosity index and 30-click damping adjustment.

Why choose this RM coilover kit E91 E93?

The RM is the choice if your E91 or E93 is mainly driven on track, at a hill climb or on a tarmac rally. The digressive damping and the synthetic oil are tuned for that use. If you drive your Touring or Convertible every day, the BR or DS is a better fit, because BC Racing recommends the RM less for road use.

BC Racing coilover kits for the BMW E91 Touring and E93 Convertible

Overview of the BC Racing series for the BMW E91 Touring and E93 Convertible supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.

For the BMW E90 Sedan and E92 Coupe, BC Racing has separate kits. Their part numbers start with I-03.

Frequently asked questions

What is the difference between the BC Racing RM and DS coilover kits for the BMW E91 and E93?

The RM uses fully synthetic oil and is intended for track days, hill climbs and tarmac rally; the DS is track-focused but also suitable for sporty road use. Both have a digressive piston, 30 clicks and 5.5/10 kg/mm. BC Racing advises periodic greasing for the RM and recommends it less for the road than the DS.

Does the BC Racing RM coilover kit I-17-RM-MA fit the BMW M3 E93 Convertible?

No. Some overviews list the M3 for this kit, but BC Racing UK releases I-17 for the regular E91 Touring and E93 Convertible with rear-wheel drive (2005 to 2011), excluding the M3. For the M3 Convertible BC Racing has separate kits, and for the E90 Sedan and E92 Coupe there are I-03 kits; if in doubt, contact us.

Is the BC Racing RM coilover kit suitable for daily use in an E91 Touring or E93 Convertible?

Not as a first choice. BC Racing recommends the RM series less for road use than the BR, DS, ER or ZX and advises periodic greasing. The RM coilover kit E91 E93 is intended for track days, hill climbs and tarmac rally.

What is the delivery time of the BC Racing RM coilover kit for the E91 and E93?

The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the kit is temporarily sold out, you can still order it and we will let you know when it has arrived.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.