The Michelin Defender LTX tires have a rather deep and rugged tread pattern. (Compared to the shallow tread on the super smooth Michelin Premier LTX tires) On most roads, the ride feels the same as the OE tires, but the big difference is the 18" Defender tires with taller sidewalls certainly go over potholes, sunken drain grates and rough dirt roads much smoother than the 20" wheels & tires. Plus my new teen drivers have already rubbed on a few curbs and the 18" tires only have minor scuffs. The OE wheels would have been badly scratched by now.