ok... I have my stock rims/tires. They're 195/60/15. I'm getting different tires, but I want something wider and lower profile. I was hoping like 205/50/15. I think 50 series is the thinnest I can go....that's fine. But how wide can I go on the stock rim? Can I go up to 215???

 

Take a look at this link that was posted in the Sticky in this section. It will tell you the recommended rim sizes for the tire size. Just plug in the sizes you are looking at. It will even tell you how far off your speedo will be.

http://1010tires.com/TireSizeCalculator.asp