well the toyo has a 7 ply sidewall which adds to the weight. If I'm not mistaken the BFG only has a 4 or 5 ply. A huge advantage IMO is that the Toyo are almost perfectly balanced right from the factory. Go ask any tireshop thats mounted the Toyo MT and they'll tell you that it takes almost no counter weights if any to balance them. The local L. S. here just mounted a set for a Excursion after they had lifted it and the manager (a friend of mine) said they didnt' need ANY weight to balance them. They were all perfectly true.