Matching a modified vee Zodiac Bayrunner 500 2013 against a inflatable rigid Zodiac Pro 550 2011 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department — Zodiac Bayrunner 500 2013 at 15,4 ft versus Zodiac Pro 550 2011 at 17,2 ft. Weight tells a clearer story for trailering families: the Zodiac Pro 550 2011 tips the scales at 695 lbs — 188 lbs less than the Zodiac Bayrunner 500 2013 at 507 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 70 hp for the Zodiac Bayrunner 500 2013 and 90 hp for the Zodiac Pro 550 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Zodiac Pro 550 2011 is rated for 12 passengers, while the Zodiac Bayrunner 500 2013 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Pro 550 2011 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac Bayrunner 500 2013 comes in at 7 lbs per hp versus 8 lbs per hp for the Zodiac Pro 550 2011. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Top speed is rated at 42 mph for the Zodiac Pro 550 2011 and 41 mph for the Zodiac Bayrunner 500 2013.
The Zodiac Bayrunner 500 2013 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Zodiac Pro 550 2011 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Zodiac Pro 550 2011 if your priority is putting more people on the water — it handles 12 passengers and at 17,2 ft it has the deck room to back that rating up comfortably. The Zodiac Bayrunner 500 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.