Very good job!
If you want rainfx on this track, I made it.
Just copy this following line in ext_config.ini (assettocorsa\content\tracks\le_mans_bugatti\extension)
[RAIN_FX]
PUDDLES_MATERIALS= road, asph_mesh, road_out, bldg_lman_pt21cottage_001_wallb_diff, w_line, road_pit, michelin_line, Material__62, y_line, w_line,
SOAKING_MATERIALS= road, asph_mesh, road_out, bldg_lman_pt21cottage_001_wallb_diff, w_line, road_pit, michelin_line, Material__62, y_line, w_line,
SMOOTH_MATERIALS= pitwall_concrete_clean, bldg_lemans_concretegrunge_001_diff, OBJ_LMAN_Pit_Overhead_Frame_A_001_Shinny_Metal, OBJ_LMAN_Pit_Overhead_Frame_B_001_Shinny_Metal, OBJ_LMAN_Pit_Fuel_Tank_001_Metal, signs_lman_pit_boardboards_002_diff, bldg_lman_pt01_racecontrol_fence_001_diff, pitwall_concrete_clean, ForzaBlack, Motul, Xbox, 24_Leman, MS_Studios, Shell, Porsche, RTL, Total, Rolex,
ROUGH_MATERIALS= grass, gravel, pines1,
It's not perfect but cool.