Toyo's are very heavy tires. I really like them and they are quite durable, but very heavy. Next time I'm going with BFG's. "Unsprung weight" is going to be the hardest on your fuel economy. As for most armor the differences in weight are going to be minor and considering how little a hundred pounds is to a vehicle weighing in at over 5k I wouldn't worry as much about those bits. That being said I would have to agrea that ARB is quite heavy even for a bumper.