No!. It is very unsafe to mix tire and rim sizes.
Well over a hundred pounds.
Probably not. The rim may not clear the brakes.
You cannot mount a 15 inch tire on a 15.5 inch rim.
the 16 inch steel rim is about 9.4kg
No. Even if you were able to stretch the tire on the rim, it will cause damage to the tire.
38lbs Depends on the material the wheel is made of steel, or aluminum. Also the width of the wheel determines it's weight. 20 pounds is about average for an aluminum wheel and 30 pounds for a steel wheel.
The biggest tire that can fit on a 15 inch rim is a 15 inch tire. It is very unsafe to mix rims and tire sizes together.
You destroy the tire trying to stretch it around the rim.
No. Even if you were able to stretch the tire on the rim, it will cause damage to the tire.
NO. The tire is an inch bigger around than the rim....
Between 100 and 120 lbs, without the rim, depending on specifics. There'll be a substantial difference between, say, an 11R24.5, a 285/75R24.5, and a 315/80R24.5 tire.