Hello all, I have a 2012 Vitz, 1.0 base grade with no modifications done to it and am currently running stock steel rims. I would like to change and rims and tires but regarding the rims, I am a bit confused. The car already feels under powered to me and I think changing from 14" to 15" will drain the power further. Please comment on that and what is the ideal choice for tires ??? Not a fan of very thin, eco tires though.