My 2022 CX5 had a license plate holder with screws/bolts in the luggage space. Maybe someone at the dealer removed them. Take new ones from a different car.
Car manufactures invest in time and testing to pick the best correct tire size for the gearing, weight and engines power of their vehicle. I seriously dough any guesses by a home owner will improve that.
I suspect that getting the vehicles on and off the boat resultes in a considerable amount of go-stop-go-back up etc. The transmission is learning from that. I just disconned the main battery and hit the brake pddel several times. Reconnect the battery and drive as you normally would so it...
I also mentioned that the steering effort is too high (85 year old who does go to a gym class). Some vehicles I'm told have an option of adjusting the steering effort. I seem to remember one of my older vehicles had variable ratio PS. Mazda seems to be behind the times in this area. Ed