[Perfectlap]

^ Has more to do with the weight than the size. You can have 19" wheel with a smoother ride than a set of 17" 33+ lb. boat anchors.

Generally 20 lb. and under is considered light. 30 lb. and over heavy. And lightweight and 19-20" wheels are pricey. Most inexpensive wheels are generally heavy, prone to crrrracking, and really drag down the Boxsters take off off braking and from a stop. Doesn't help gas mileage at all either (lose lose).