16. GRBP received a status report of the Informal Working Group on Wet Grip Performance of Tyres in Worn State (IWG WGWT) (GRBP-81-23) and updated its Terms of Reference with the aim to define a Key Performance Indicator (KPI), to fix a target for the improvement of the test procedure precision and to extend the test campaign, if necessary (GRBP-81-22 and annex II).