As above, your RLD is based on runway condition. EASA definition is, Dry Runway means a runway which is neither wet nor contaminated, and includes those paved runways which have been specially prepared with grooves or porous pavement and maintained to retain ‘effectively dry’ braking action even when moisture is present;
FCOM RLD tables should include a credit for a wet grooved runway vs a wet runway. However, the braking coefficient on a grooved runway also depends on how effectively the runway has been maintained so even if it is grooved, in wet conditions it may not provide a significantly better braking action than one which is not grooved.