Hello. I am a complete noob when it comes to cars. I have browsed on the forums and to my knowledge, it I change out the factor 21 inch ubertine tires with 19 inch wheels, my ride will be smoother? If this is correct, does anyone have 19inch or 20 inch tires/wheels that they would recommend? Is it hard to sell or trade the stock 21 inch ubertine tires? Any input would be amazing.