Well depending on what you want to know. The tractor itself varies by what it is. Daycab,Sleeper,Studio Sleeper,ETC.. But, the total legal weight a semi can be on the road in the US is 80,000 pounds without have special permits.
80,000 lbs
15 tons
A wheel from a big rig may weigh over 150 to 200 lbs, including the tire, rim and wheel well. Semi-truck tires often weigh around 80 to 100 lbs.
It weighs from 8 tons to 10 tons.
40 - 50 lbs.
69,500 pounds
Generally on a semi-tractor trailer the limit is 80,000lbs
ranges between 17k-20k
Semi-truck tires can weigh up to 110 pounds. The tires for passenger cars have an average weight of 22 pounds, and tires for light-weight trucks average around 35 pounds.
Daycab Semi trucks can range in size from 2 tons to 6 tons maximum.
The average mass is 14,000 to 20,000 lbs. You can find the mass of a semi truck by visiting a nearby weigh station. The truck should not contain any other item or luggage while on the scale.
Typically, between 16,000 and 18,000 lbs.