I've always tried to drill into friends heads about the quality of thier tires and suspension on thier cars... This is an old saying that I've told every girlfriend I've ever had and pretty much anyone I run into about thier tires...
"your tires are the ONLY part of your vehicle that touches the road - the better your tires, the better chance you have of controling your vehicle"
Always check your tires for improper wear and for proper air preasure that matches your vehicles specs for stock size tires and tire specs for custom sized tires... Be safe on the road - keep your tires healthy!