help me understand
 

hey can someone help me understand wheels and tires and what each number means cause i don't really know much about it. i'd also like to know what would fit my car. i wanna go with 17". it's a '99 mazda 323. you can take a look at my car here.
thanks!

http://www.tirerack.com/tires/tiretech/general/size.htm
This link should give you a little insight.

Try this, it's a Tire Size Calculator. It will help you determine which size to use.

http://www.miata.net/garage/tirecalc.html
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DiamondKitten