Another important thing to check regulary is your trye pressures. Correct tyre pressures results in optimised braking, handling, grip and fuel efficiency where as low tyre pressure will increase your car's fuel consumption, shorten the life of the tyre and increase risk of tyre failure. High tyre pressure will cause diminished grip, reduce stability in braking and cornering and increase the risk of impact tyre damage.
You should check your tyre pressures including your spare often, ideally once a week, but its important to remember to check your tyre pressures only when your tyres are cold as hot tyres will cause the air in them to expand and give you a false reading of the tyre pressure
The correct tyre pressure for your particular car will be listed in the owner's manual and/or on a placard mounted on the car. The correct tyre pressure will relate to the load the car is carrying - the higher the load the higher the pressure.