When two boats share the same hull type — in this case both the Bayliner 266 Discovery 2013 and the Bayliner 315 Cruiser 2012 are deep vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The Bayliner 315 Cruiser 2012 measures 30,5 feet overall (2012), giving it roughly 4,9 additional feet of deck space compared to the Bayliner 266 Discovery 2013 at 25,6 feet (2013). Weight tells a clearer story for trailering families: the Bayliner 315 Cruiser 2012 tips the scales at 9 098 lbs — 8 416 lbs less than the Bayliner 266 Discovery 2013 at 682 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.

The Bayliner 315 Cruiser 2012 tops out at 260 hp. Engine specs for the Bayliner 266 Discovery 2013 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Bayliner 266 Discovery 2013 carries 81 gallons versus 12 gallons in the Bayliner 315 Cruiser 2012. 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 Bayliner 315 Cruiser 2012 is rated for 9 passengers, while the Bayliner 266 Discovery 2013 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Bayliner 315 Cruiser 2012 could be the deciding factor.