I had 17" rims with winter bridgestone blizzak tires that I got last year for my 2011 ford explorer. Could I put 17" rims on the QX, considering I do not want to throw away those almost brand new tires? Someone said that the base model comes with 18" being the smallest, hence 17 would be impossible. If I can match bolt pattern and spacing, would anyone know if this would be possible? Or are the calipers too big? They don't seem bigger than the explorer ones though!