I was looking to buy some new rims and tires for my 2005 MINI Cooper S next summer. I found a set of 15x8 rims with +22 offset, 4x100 bolt pattern, and a 73.1mm hub. I was wondering if these rims would work on my car. also I was going to get 225 45 15 BFGoodRich G-Force rival tires on them, and I was wondering if I would need 5mm spaces to run this set up. also I'm not to sure was a +22 offset is...