Ah, the good old days ... when a 30x9.50 was roughly that, about 30" tall by 9-1/2" wide no matter what size rim it was monted on. Then we went "global" and tire sizes in the P/LT-metric world get a bit tricky.
As mentioned earlier, a 225/75-16 is about 1" taller than a 225/70-16, as only...