XYZ Racing Tarmac Rally Coilovers — BMW 8 SERIES E31 12 CYL φ55 welding 1990-1999

The E31 8 Series carries a 5.0-litre or 5.4-litre V12 ahead of the front axle, a factory weight bias that makes fast direction changes a genuine test of front-end control – precisely what a sealed tarmac stage demands over repeated runs. XYZ Racing’s Tarmac Rally coilover is built for that discipline: a damper tuned to soak up mid-corner compressions and camber changes on closed public roads rather than a smooth circuit surface.

For the BM114-coded 12 CYL φ55 Welding cars specifically, the kit is fitted as a welded strut conversion rather than a bolt-in cartridge, because the factory 8 Series strut body was never designed to accept a threaded coilover sleeve. That fabrication step is what makes ride height and damping adjustment possible on a chassis this heavy, and it is what separates a genuine rally-spec install from a bolt-on aftermarket kit.

What this coilover does for your 1990-1999 Bmw 8 Series E31 12 Cyl φ55 Welding

Once the φ55 strut is welded and the coilover is set up, the E31’s nose stops diving into a stage’s tighter junctions under braking, and the rear axle stays loaded enough to put the V12’s torque down out of slower corners without the car stepping wide on loose tarmac edges. Ride height can be dropped and corrected independently of spring preload, which matters on a car this long – wheelbase and body roll are both working against you the moment the road tightens. Because the damper is calibrated for repeated big-bump absorption rather than a one-off kerb strike, the front end holds its line through compressions that would unsettle a stock 8 Series strut. Traction off the line and through mid-corner improves too, because the tyre stays in more consistent contact with a surface that isn’t.

About the Tarmac Rally coilover

The Tarmac Rally line is built around the broken, cambered, and frequently patched surfaces of closed-road rally stages, where a pothole or kerb strike can arrive without warning. The valving is set up to soak up a hard, sudden impact – the kind an uneven stage throws at a car mid-corner – without the body kicking back at the driver or the tyre losing its footprint. That control keeps the contact patch working even when the road surface itself is inconsistent, which is what keeps the car pointed instead of letting it skate wide. XYZ Racing carries these damping settings over directly from its own tarmac rally programme rather than adapting a road or circuit base tune, so the compression and rebound curves reflect what a stage surface actually demands rather than a generic fast-road compromise.

Fitment for the Bmw 8 Series E31 12 Cyl φ55 Welding (1990-1999)

This kit is built for the BM114 chassis code covering the 8 Series E31 built from 1990 to 1999, specifically the 12-cylinder cars that require the φ55 welding-type strut conversion rather than a direct bolt-in cartridge. Because the install involves welding the strut body, confirm the conversion matches your car’s existing strut before ordering.

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Configure the φ55 welding-type Tarmac Rally kit for your E31 below and set the ride height and damping to match your stage.