I have a stock 2012 Ram 1500 ST 5.7 Hemi. It's time to replace the tyres, so I am thinking of ditching the standard 17's and alloys for something bigger and smarter. Can anyone advise whether it's possible to move up to 20's without requiring any changes to the suspension and/or lift? I don't want to change anything but the tyre size. Please also recommend tyres and alloys - thanks!