either way they are big.
largest i have ever used on a bump is 40s.
i do have a couple sets of airplane tires for my 61 f500 4x4.
buying a used car or truck i never really worried much about the size, its the wear pattern on the front i look at, and if the tread pattern dont match the rear or are brand new i am going to ask why.
you can ford a river or stream and get to the other side, if you dodge it you will not, and if you drive a chevy to the levee it will run dry and the music will die.