Alloy Wheels

Hi!
Need some advice here!
I'm thinking of getting a different set of wheels for my freelander, I want some Range Rover Sport replica wheels... does anyone have these and what size? I want to go up to 18s but dont want it to look chavvy or ruin the ride!
Answers on a postcard please! haha

I think the 17' Triple Sport on mine look great, i would think going any bigger would ruin the ride.