XYZ Racing Tarmac Rally Coilovers — BMW 6 SERIES E63 8 CYL 2004-2010

The E63 6 Series was built as a long-legged autobahn GT, not a stage car, which is exactly the problem the Tarmac Rally coilover on this BM44-chassis coupe is built to solve. Its V8 sits well forward of the front axle line, loading the nose hard under trail braking into a rally corner, and the standard air-assisted dampers were tuned for motorway comfort rather than holding a consistent line over broken tarmac at speed.

XYZ Racing’s Tarmac Rally line answers that with a damper tuned specifically for sealed-stage work, settings pulled from closed-road rally programmes rather than road-car comfort targets. On a car this size, that control matters more than usual, because there’s more mass to manage every time the road surface changes underneath it.

What this coilover does for your 2004-2010 BMW 6 Series E63 8 CYL

Fitted to a 6 Series this size, the change is most obvious over the kind of broken, undulating tarmac that rally stages are built on. Where the factory dampers let the big coupe’s body float and wallow as the surface changes, the Tarmac Rally kit keeps the chassis flat enough that the front tyres stay loaded through direction changes rather than skipping over the tops of bumps. That translates into more consistent traction out of the corner, particularly under the load a V8 like this can put down, and less of the rear-end shuffle a heavy GT car is prone to when a broken surface hits mid-corner. Ride height and spring rate are both adjustable, so ground clearance can be set to suit stage conditions rather than left at the low, static set-up most road coilovers assume.

About the Tarmac Rally coilover

The Tarmac Rally coilover is built around a damper tune developed specifically for sealed-stage rally use, where the road surface itself is the main variable rather than a smooth circuit line. The valving is calibrated to absorb the impact of broken and uneven tarmac without transmitting it straight into the body, so a hard hit mid-corner doesn’t unsettle the chassis the way it would on a standard set-up. That same control is what keeps the tyre loaded onto the road for traction, rather than letting the wheel skip on landing after a compression. The result is a car that holds its line and stays stable under load, instead of pitching and rolling every time the surface changes. XYZ Racing built these settings directly from its own tarmac rally experience, carrying that damping knowledge into a kit sized for stage and fast-road use on the BM44-chassis 6 Series.

Fitment for the BMW 6 Series E63 8 CYL (2004-2010)

This kit is specified for the BM44-chassis BMW 6 Series E63 coupe with the 8-cylinder engine, covering the 2004 to 2010 production run. Confirm your car matches this chassis code and engine configuration before ordering, as coilover spec differs between the V8 and V10-engined variants of the E63 range.

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Spec the ride height and spring rate to suit your BM44 6 Series and configure yours below.