BassAckwards

There isn't an LT metric size to compare it to so it's kinda apples-oranges.

If you look at LRE LT265/70R17 MS2 vs. P265/70R17 MS2 it's only a 6 lbs difference. Will make a difference but I wouldn't say that's too outrageous. Going to bigger than stock sizes is when the weight difference really stacks up on top of increased rolling resistance. Only 2 LT275/55R20 even exist. Idk how much they weigh though as the BFG TA KO2 isn't out yet and I'm too lazy to look up the Toyo MT weight.