Hey, I've been wondering if i should change my rims to 13 inch to get that lowered/slam looked. Currently running on 15 inch rims. Found a 13 inch cross fever rims. Any advice weather i should down to 13 inch or 14 inch? 

Wanted to have a stance like this. 

Check what tyres you can buy before getting the rims. You will find good 13" are not so available these days, and 14" are also shutting down.

I like the 13" look myself, 13x7 would be great. The Escort guys reckon 195/45 x13 for the handling, 205/60x13 for the looks.

Like the look of 13's as well but as Altezzaclub mentioned decent sized tyres are hard to find.