Not as simple as it sounds.
As iirc that wire has to be connected to another one behind the glove box and then that one has to be connected to one in the engine bay to get power.
It varies and a big part of the selection can be the exact tire you want. As the video pointed out in the case of the KO3s the manufacturer used stronger sidewall plies in the C to make up for losing a ply compared to the E rated one
That's a good way to end up with no defrost, as the connectors aren't attached to the window all that solid. The connection is NOT designed to be disconnected and reattached multiple times.
That can vary.
Not all rock crawling is the same.
Crawling in Moab on smooth sand stone is a totally different thing than crawling over water smoothed boulders in an old river bed and both are different from crawling in Johnson Valley on jagged volcanic rock and sharp basalt.
Also the weather...