Tiara Yachts 3900 Convertible 2007 boat specs
Tiara Yachts
Tiara Yachts 3900 Convertible 2007
2007
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Tiara Yachts 4300 Open 2012 boat specs
Tiara Yachts
Tiara Yachts 4300 Open 2012
2012
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Tiara Yachts 3900 Convertible 2007 vs Tiara Yachts 4300 Open 2012: Same Brand, Different Boat

The Tiara Yachts 3900 Convertible 2007 vs Tiara Yachts 4300 Open 2012 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.

Size is the most obvious dividing line here. The Tiara Yachts 4300 Open 2012 measures 45,9 feet overall (2012), giving it roughly 4,9 additional feet of deck space compared to the Tiara Yachts 3900 Convertible 2007 at 41,0 feet (2007). Weight tells a clearer story for trailering families: the Tiara Yachts 3900 Convertible 2007 tips the scales at 30 125 lbs - 125 lbs more than the Tiara Yachts 4300 Open 2012 at 30 000 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 power gap is worth calling out. Rated to 715 hp, the Tiara Yachts 4300 Open 2012 has a 140-hp advantage over the Tiara Yachts 3900 Convertible 2007's 575-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Tiara Yachts 4300 Open 2012 carries 600 gallons versus 475 gallons in the Tiara Yachts 3900 Convertible 2007. 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 Tiara Yachts 4300 Open 2012 is rated for 14 passengers, while the Tiara Yachts 3900 Convertible 2007 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tiara Yachts 4300 Open 2012 could be the deciding factor.

Bottom line: Choose the Tiara Yachts 4300 Open 2012 if your priority is putting more people on the water - it handles 14 passengers and at 45,9 ft it has the deck room to back that rating up comfortably. The Tiara Yachts 3900 Convertible 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 12 that costs less to run day-to-day.
General Boat Info
MakeTiara Yachts
MakeTiara Yachts
Model3900 Convertible
Model4300 Open
Model Year2007
Model Year2012
Measurements / Dimensions
Beam14 ft. 5 in. (4.44 m)
Beam15 ft. 4 in. (4.67 m)
Beam - Meters4.39
Beam - Meters4.67
Beam - Inches173
Beam - Inches184
Deadrise14℃
Deadrise17.5°
Draft [max] - Detail3 ft. 6 in. (1.06 m) w/props
Draft [max] - Detail4 ft. 2 in. (1.3 m)
Draft [max] - Meters1.07
Draft [max] - Meters1.27
Draft [max] - Inches42
Draft [max] - Inches50
Weight - Detail30,125 lbs. (13,664 kg)
Weight - Detail30,000 lbs. (13,607.77 kg)
Weight - kg13664.46
Weight - kg13607.76
Weight - lbs.30125
Weight - lbs.30000
Length - Meters12.7
Length - Metersnot available
Length - Feet41
Length - Feet45.92
Length - Inches7
Length - Inchesnot available
Length [over all with swim platform]44 ft. 1 in. (13.43 m) w/standard pulpit and optional 30 in. swim platform
Length [over all with swim platform]not available
Length overall - Detail41 ft. 7 in. (12.7 m) w/standard pulpit 39 ft. 0 in. (11.9 m) w/out standard pulpit
Length overall - Detail45 ft. 11 in. (13.99 m) with standard pulpit 43 ft. 3 in. (13.18 m) without standard pulpit
Length overall - Meters12.67
Length overall - Meters14
Length overall - Inches499
Length overall - Inches551
Height - Detailnot available
Height - Detail9 ft. 7 in. (2.92 m) waterline to top of windshield
Height - Metersnot available
Height - Meters2.92
Height - Inchesnot available
Height - Inches115
Engine and Drivetrain
Engine/s standardTwin Cummins? QSC Diesels, 540 hp
Engine/s standardnot available
Fuel tank capacity - Detail475 gal. (1,798 l)
Fuel tank capacity - Detail600 gal. (2,271.3 l)
Fuel tank capacity - Liters1798.07
Fuel tank capacity - Liters2271.25
Fuel tank capacity - Gal475
Fuel tank capacity - Gal600
Fuel typeDiesel
Fuel typeDiesel
Drive typeI/O
Drive typeInboard - Twin
Engine max575 hp
Engine maxTwin 715 hp
Battery12V two bank battery system with batteries and battery switches (3 engine batteries and 4 house batteries)
Batterynot available
Operational Info
HeadVacu-flush? toilet with holding tank
Headnot available
Sleeping capacity6
Sleeping capacity6
Water capacity110 gal. (416 l)
Water capacity130 gal. (492.1 l)
Holding tank capacity - Detail38 gal. (144 l)
Holding tank capacity - Detail50 gal. (189.27 l)
Holding tank capacity - Liters143.85
Holding tank capacity - Liters189.27
Holding tank capacity - Gal38
Holding tank capacity - Gal50
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeDeep Vee

Tiara Yachts 3900 Convertible 2007 vs Tiara Yachts 4300 Open 2012 - Common Questions

Which is the larger boat - the Tiara Yachts 3900 Convertible 2007 or the Tiara Yachts 4300 Open 2012?
The Tiara Yachts 4300 Open 2012 is the longer of the two at 45,9 feet overall. The Tiara Yachts 3900 Convertible 2007 comes in at 41,0 feet, making it roughly 4,9 ft shorter - a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer - the Tiara Yachts 3900 Convertible 2007 or the Tiara Yachts 4300 Open 2012?
For trailering, the Tiara Yachts 4300 Open 2012 has the edge at 30 000 lbs dry weight versus 30 125 lbs for the Tiara Yachts 3900 Convertible 2007. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Tiara Yachts 4300 Open 2012 is rated to a maximum of 715 hp, giving it the larger power ceiling. The Tiara Yachts 3900 Convertible 2007 tops out at 575 hp. Keep in mind that maximum ratings are just that - matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Tiara Yachts 3900 Convertible 2007 is Coast Guard rated for 12 passengers, while the Tiara Yachts 4300 Open 2012 is certified for 14. Note that legal capacity and comfortable capacity aren't always the same thing - on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat is wider, and does it affect trailering?
The Tiara Yachts 4300 Open 2012 measures 184" wide, compared to 173" for the Tiara Yachts 3900 Convertible 2007. The US standard-width towing limit is 8’6" (102") in most states - anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank - the Tiara Yachts 3900 Convertible 2007 or the Tiara Yachts 4300 Open 2012?
The Tiara Yachts 4300 Open 2012 has the bigger tank at 600 gallons, versus 475 gallons on the Tiara Yachts 3900 Convertible 2007. That 125-gallon difference translates to roughly 375–625 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Tiara Yachts 3900 Convertible 2007 and Tiara Yachts 4300 Open 2012 from the same manufacturer?
Yes - both the Tiara Yachts 3900 Convertible 2007 and the Tiara Yachts 4300 Open 2012 are built by Tiara Yachts. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.