Save Money on Tire Changes
One way you may be able to save money on the expense of owning a vehicle would be to invest in a spare set of rims. This, of course would only be a benefit to you if you live in an area where you need to use winter tires during part of the year. Otherwise you can just install all season tires and leave them on until they are worn out.
The Cost of Swapping Tires
Getting tires mounted at a garage can be expensive. Where I live, taking your all-season tires off your rims and putting winter ones on will cost you around $65 at a garage. When the spring rolls around you have to spend another $65 to swap them back. This is unfortunately a necessary evil; in many places you can't drive around very well without winter tires for a good portion of the year.
Why not just Leave Winter Tires on all Year?
Winter tires tend to wear much more quickly during the hotter weather because of the softer compound used in them. They're also really noisy, and if you have studded winter tires you are required by law to have them off at a certain date as the studs cause extra wear on the pavement.
Save Money by Buying a Second Set of Rims
A good way to save on the cost of having to get your tires switched on and off of one set of rims would be to purchase a second set of cheap rims to use just for your winter tires. Have a look on your local classifieds for a set. Many times people will sell their used cars and forget about the spare rims they have and end up selling them separately. It should be no problem to pick up a set for $100 to $150. Be sure that they are the proper size for your vehicle. The width, diameter and lug pattern have to match.
I typically get 3 years of driving from my winter tires and 3 from my all-season tires. So I only end up having to pay for tire change over twice every three years. Everything you need to change the wheels over should have come with your car. You just need a jack, lug wrench and a little time and effort.