Yeah in other words, if you're trying to impress randoms when your rock up Maccas, go for it. But on the downside you'll have to learn to live with a car that handles like shit, destroys tyres and is a cop magnet.
Edit: This will tell you how much the wheels will stick out ie. how much more/less outer and inner clearance you will have http://www.1010tires.com/WheelOffsetCalculator.asp ...it won't tell you however the effects on your suspension geometry/handling etc