The Chaparral Boats 235 SSi 2002 vs Chaparral Boats 310 Signature 2011 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The power gap is worth calling out. Rated to 270 hp, the Chaparral Boats 310 Signature 2011 has a 50-hp advantage over the Chaparral Boats 235 SSi 2002's 220-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Chaparral Boats 310 Signature 2011 carries 125 gallons versus 6 gallons in the Chaparral Boats 235 SSi 2002. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Chaparral Boats 310 Signature 2011 is rated for 9 passengers, while the Chaparral Boats 235 SSi 2002 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Chaparral Boats 310 Signature 2011 could be the deciding factor.
Bottom line: Choose the Chaparral Boats 310 Signature 2011 if your priority is putting more people on the water — it handles 9 passengers and at 31,0 ft it has the deck room to back that rating up comfortably. The Chaparral Boats 235 SSi 2002 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.