See also:

Tire Balancing
A tire that is out of balance may affect handling and tire wear. The tires on your Hyundai were balanced before the car was delivered but may need balancing again during the years you own the car. ...

TEMPORARY SPARE TIRE
The following instructions for the temporary spare tire should be observed: 1. Check inflation pressure as soon as is practical after installing the spare tire, and adjust to the specified pressure ...

Why didn’t my air bag go off in a collision? (Inflation and non-inflation conditions of the air bag)
There are many types of accidents in which the air bag would not be expected to provide additional protection. These include rear impacts, second or third collisions in multiple impact accidents, ...