Licencing for a mechanic is often a state or local requirement and may differ in different places. It is best to check with local authorities before deciding whether or not a licence is required. Simply changing and installing tires is not a complicated process, but when you start doing work on alignment, steering and suspension which is often also done in a tire shop, the issue starts getting more complicated, so you have to be very clear in the kind of service you're going to provide.
There are several business that can install your tires for you. Some generic ones would be places like Canadian Tire, however you could take them to almost any mechanics or garage and get them put on for a small fee.
a flat rate
Ehow.com has an article on how to install chains on your tires. Edmunds.com also has an article on how to properly install chains on your tires as well.
You can install 4 snow tires but it is really not necessary. Only install the snow tires on the drive wheels.
Depending on what kind of race, the tires get worn quickly during the race.
Yes, if you install the correct tires and use 16" rims/wheels as well. Install tires that end up giving you the same overall diameter as the OEM 15" tires. You can use a tire size calculator to determine the size tires you need.
Three companies that install automotive tires include Goodyear, Kicking Tires, and Wal-Mart. The first two companies are designed specificially to service automobiles.
$40 would be average
Please do not install tubes in tubeless tires. Most rims for tubeless tires have a drop center and the tube does not make a good contact which can lead to a sudden loss of air pressure which can be deadly.
Yes. As long as the chains are compatible with the type and size of tires on your van.
You can only install studs on tires that are designed to accept studs.
NO NOC or licence require for importing of tires from Dubi or UAE.