Car drifts to right at highway speeds and is worse on wet pavement

Hello, sounds like I would have the vehicle checked for bent or worn components in the steering and suspension, check the tires for wear pattern and wheels for any damage; balance the wheels and perform a 4 wheel alignment - including rear wheels to ensure there is proper front and rear wheel alignment to each other, not just avoiding tire wear. There is a chance - if all that checks good - that there is some kind of vehicle dynamics which is sensing a concern (erroneously or not) and tries to "correct" the vehicle. In this case, some testing by a trained technician with diagnostic equipment and some driving will be needed to duplicate the concern and then see what is happening when it occurs. https://repairpal.com/auto-repair-near-me