How is this possible?

How is it possible guys are going from stockers to a 25" or 26" tire on these little 300s with no GR and they say it’s not that bad
Most rear tires are adding 10lbs rotational each so thats 20lbs just on the rears alone. I went from stockers to 23"/24"mud lites. Now I want to upgrade to a true 25" tire and just can’t wrap my head around the added weight.