This update also contains an altered ext_config.ini with following added:
;fix reflection from tyres which dissappears when wheels start turning
[SHADER_REPLACEMENT_...]
ACTIVE = 1
MATERIALS = Tyre
SHADER = ksPerPixel ;was ksTyresFX
PROP_... = ksDiffuse, 0.3 ;was 0.4
PROP_... = ksSpecular, 0.01 ;was 0.35
PROP_... = ksAmbient, 0.3 ;was 0.5
(you can also just copy/paste this in the extension/ext_config.ini file at the end , esp in case you have already an updated version newer then 20240103)