Can someone tell me the differnce between the Rim Sizes. I want to put Rota Slipstreams 15' on my car. Yes, I understand this but not the second part.

SlipStream
15x6.5
15x7

15x? What do these numbers mean? Most be something important if there is a difference in price. Thanks
Yes, I am a no0b
Appreciate the help.!

 

the second number is the width of the rim in inches. you can put a wider tire on a wider rim. wider tire=better traction.

 

get the 15x7 and get a 205/50/15 tire for it