tumpang thread, anyone with cx5 2.0 change from 17" to 18"?

reason I'm asking, I'm trying to get a new look for my cx5 by changing rims n tyre together in future. I like to know what spec of rims and tyre u would change for 18", I'm not going for 19" coz I don't want to have huge gap differences of performance n comfort, no doubt 19" is a looker.

thanks for sharing information, will use it to make further research.