@DrivingFast for someone so into rF2 and realism, you seem to have missed a lot of stuff. Quick catch up: rubber groove gives more grip in the dry, and probably more in the wet (I haven't specifically tested). Certainly not less. In terms of reality the bigger issue is worn aggregate, which is the main reason for the 'wet line' drivers take, especially on sharper corners. The game now has the ability to have varying roughness for different materials and this should allow a more realistic dry/wet grip transition, at least on a damp track (on a wet track, >50% wetness, a tyre-defined grip loss occurs in lieu of actual aquaplaning). In practice I don't know if anyone knows good figures to use to achieve this. I suggested a wet groove effects parameter back in maybe 2013 as a workaround. We got material roughness replacing a wet grip parameter in 2015 or 2016, and that's where we are. When people come along and say why is everyone happy with how rF2 is, why aren't they complaining, are they all fanboys? No, we've just given up for the moment on asking for things. We can only hope that with the new lease on life S397 is giving rF2 some of these ongoing issues are finally looked at.