How should I tune the rear sway bar on a Rêve D RDX?

On the Rêve D RDX, tune the rear sway bar in small steps: use a softer or no bar for more rear grip and stability, and a stiffer bar when you want the rear to rotate more freely. The RDX’s listed rear-bar options are 0.8 and 1.0 mm; setups also include no bar on a medium-grip unknown track and 1.2 mm on low-grip P-tile.

A stiffer rear bar limits how independently the rear wheels move, which generally reduces rear side grip and makes the car feel more willing to rotate. A softer bar lets the rear suspension work more independently, which can make the car calmer and help it hold rear grip.

• If the rear steps out too easily or transitions feel nervous, try removing the bar or moving to a thinner one.
• If the car feels too planted at the rear and won’t rotate enough, try a thicker bar, changing only that setting first.
• Check that the bar links move freely and are not preloaded with the car sitting at ride height.

The trade-off is stability versus rotation. These are starting points, not a universal track recipe; tell me your surface and whether the car is pushing or spinning, and I can narrow the direction.