Read the side of the tire. It should have a number such as 225/70/R15 The 225 is in millimeters, the 70 is a fraction or 70 % of the tread width the R is for Radial tire type and the 15 is the rim diameter. You can also measure the inside of the rim not to include the rim bead. Be sure to tell the rim manufacture the tire size to get a proper fit for the tire width.
Take the tire and the rim to a tire shop. It requires special equipment to properly replace the tire and balance the rim.
Probably not. The rim may not clear the brakes.
A tire is mounted on a rim.
Ys, as long as rim and tire diameter are compatible
no, it takes a 15' tire to fit a 15" rim.
NO. The tire is an inch bigger around than the rim....
No!. It is very unsafe to mix tire and rim sizes.
It is possible to get cheap tire and rim packages from stores like eBay and Tire Rack. Amazon may also have a discount on these tire and rim packages once in a while.
No. Even if you were able to stretch the tire on the rim, it will cause damage to the tire.
the last # on your tire is the size rim you need for that tire 295 50 15 /15 inch rim I am sure you know it must be a 15" rim and were asking about the width of the rim. You need at least a 9" wide rim but a 10" would be even better to avoid tire bulge.
The "doughnut" rim, NO.