Can a 2025 Toyota Tundra tow a Key West 203 FS?
Yes
We estimate a loaded Key West 203 FS on its trailer at about 3,950 lb. 4 of 4 Tundra engine/package options pass with a 20% margin (for example the SR (3.4L i-FORCE)).
Check your exact setup (add your door-sticker payload and real trailer weight)
Key West 203 FS loaded towing weight
| Weight (Key West) | 1,900 lb |
| Engine: Yamaha F200 (heaviest listed variant; also used for 175 HP), the heaviest Yamaha that covers the boat's 200 HP max | 568 lb |
| Fuel: 50 gal x 6.1 lb/gal (full tank) | 305 lb |
| Gear allowance: 10% (batteries, anchor, coolers, safety gear, T-top/options) | 277 lb |
| Trailer: ESTIMATE, 35% of boat + engine (no trailer weight published) | 900 lb |
| Estimated loaded trailer weight | 3,950 lb |
2025 Toyota Tundra towing ratings vs this boat
| Engine / package | Published rating (lb) | Tow | Payload | Result |
|---|---|---|---|---|
| SR (3.4L i-FORCE) | 8,300 | PASS | PASS | PASS |
| SR5 / Limited / Platinum / 1794 (3.4L i-FORCE) | 10,890–12,000 | PASS | PASS | PASS |
| i-FORCE MAX hybrid (Limited / Platinum / 1794 / TRD Pro) | 10,960–11,450 | PASS | PASS | PASS |
| Capstone (i-FORCE MAX) | 10,340 | PASS | PASS | PASS |
"Published rating" is the lowest–highest conventional (ball-hitch) rating Toyota prints for that engine/package across cab, bed, drive and axle choices. PASS means the loaded trailer is at or under 80% of the lowest rating. Toyota: ratings per SAE J2807; Tundra max tongue weight 1,117-1,200 lb depending on cab/drive.
Tongue weight vs payload
Tongue weight should be 10–15% of the loaded trailer: about 395–592 lb. That comes out of your truck's payload along with everyone in the cab, so with two adults (300 lb) you need roughly 695–892 lb of payload before any cargo in the bed.
SR (3.4L i-FORCE) PASS
PASS 3,950 lb is 48% of the lowest published rating (8,300 lb), inside a 20% safety margin.
PASS Needs about 695-892 lb of payload; the lowest published payload for this engine is 1,810 lb.
SR5 / Limited / Platinum / 1794 (3.4L i-FORCE) PASS
PASS 3,950 lb is 36% of the lowest published rating (10,890 lb), inside a 20% safety margin.
PASS Needs about 695-892 lb of payload; the lowest published payload for this engine is 1,575 lb.
PASS Max tongue weight for this truck/hitch is 1,117 lb.
i-FORCE MAX hybrid (Limited / Platinum / 1794 / TRD Pro) PASS
PASS 3,950 lb is 36% of the lowest published rating (10,960 lb), inside a 20% safety margin.
PASS Needs about 695-892 lb of payload; the lowest published payload for this engine is 1,565 lb.
PASS Max tongue weight for this truck/hitch is 1,117 lb.
Capstone (i-FORCE MAX) PASS
PASS 3,950 lb is 38% of the lowest published rating (10,340 lb), inside a 20% safety margin.
PASS Needs about 695-892 lb of payload; the lowest published payload for this engine is 1,485 lb.
Confirm with your door-jamb sticker and owner's manual. Your exact truck's rating depends on cab, bed, drive, axle ratio, options and tires, and your boat's real weight depends on its engine, options, fuel and gear. When in doubt, weigh the rig at a CAT scale.
Gear you may need
Placeholder links (not affiliate links yet). Disclosure.
Trailer brake controller
Boat trailers over about 3,000 lb usually need working trailer brakes (check your state's law); an electric-over-hydraulic or electric setup needs a controller in the truck.
Class IV receiver hitch & ball mount
Match the ball mount drop to your trailer so the boat rides level; the hitch rating must cover the full loaded trailer.
Tongue weight scale
The only way to know your real tongue weight (10-15% of the loaded trailer) before it eats your payload.
Sources
- 2025 Toyota Tundra: Toyota 2025 Tundra Product Information (Weights & Capacities, pp. 6-7), checked 2026-10-29
- Key West 203 FS: Key West model page (Weight, fuel capacity, max HP), checked 2026-10-29
- Engine weight: Yamaha Outboards spec page (Yamaha F200 (heaviest listed variant; also used for 175 HP), 568 lb)
- Method and assumptions: How we calculate
Related checks
Other boats with a 2025 Toyota Tundra
- Key West 210 BR (~3,980 lb)
- Tidewater 1910 BM (~4,050 lb)
- Carolina Skiff 19 LS (~3,820 lb)
- Carolina Skiff 21 LS (~4,090 lb)
- Tidewater 198 CC (~4,100 lb)
- Yamaha 190 FSH Sport (~3,770 lb)