Is the Addmotor Grandtan M-340 worth buying?
The Grandtan M-340 is the first fat tire trike in our ranking and the best non-folding one. Its 4-inch tires float over gravel, grass and broken pavement, a torque sensor keeps the 750 W motor polite, and the 48 V 20 Ah Samsung battery (960 Wh) is as large as they come at this price. Addmotor allows 350 lb for the rider and 100 lb of cargo. At $2,199 on November 13, 2026 it is fairly priced. The step-over is 17.5 inches, which is the reason it is not in our seniors ranking.
Buy it if
- Your roads are rough, or you ride on gravel, grass or packed sand
- You weigh up to 350 lb and want room for cargo on top
- You have a garage: this trike lives on the ground floor
Skip it if
- Lifting a leg is hard for you: look at trikes with a 13 to 14-inch step-over
- You need to fold or transport the trike often: see the folding ranking
What do fat tires do on a trike?
A 4-inch tire runs at low pressure and has a wide footprint. On a two-wheeler that means grip. On a trike it mostly means comfort: the tire swallows cracks, roots and gravel that a narrow tire passes straight to your back. The Grandtan adds an 80 mm suspension fork and a wide saddle with a backrest, so the whole trike is tuned for a soft ride.
The price is size and rolling effort. Fat tires weigh more and drag more, which is why Addmotor pairs them with a 750 W rear motor and its biggest battery. Stated range is up to 85 miles on assist level 1; expect about half with normal assist. Top speed is 20 mph.
Why does the torque sensor matter here?
A heavy trike with a strong motor can lurch when the assist kicks in. A torque sensor avoids that by measuring the pressure on the pedals: light pressure, light help. Start from a stop sign with a gentle push and the Grandtan moves off gently. Stand on the pedal to climb, and it gives you everything.
Together with seven gears, it makes this trike feel closer to a bicycle than most. The triple disc brakes, the parking brake and the differential do the rest. Addmotor says the trike meets UL 2849 and its battery UL 2271.
Video: "Addmotor Grandtan II 2024 Electric Trike Assembly Tutorial & Operations Guide", Addmotor on YouTube. Not made by us; chosen because it shows the trike or the topic clearly.
What's in the box?
The trike, the Samsung 48 V 20 Ah battery, a charger, the rear basket, the backrest saddle, tools and the manual. Addmotor says it ships 85% pre-assembled.
How do you set it up, and what should the first ride be?
The box is large and heavy: have it delivered where the trike will live. The last 15% is typically the handlebar, front wheel, fender, pedals, saddle and basket; Addmotor publishes an assembly tutorial video for the Grandtan. Pump the fat tires to the pressure printed on the sidewall, charge fully, then ride your first mile on level 1.
What does it really cost?
$2,199 was the sale price on November 13, 2026 (list price shown: $2,899). An extra year of warranty is $199, a pet carrier $89, a trailer $299. Because the trike does not fold, a hitch rack rated for its weight is the real hidden cost if you plan to travel with it.
Per watt-hour of battery, that is $2.29: the figure our tie-break uses.
What do we like, and what should you know?
- 4-inch fat tires: 24-inch front, 20-inch rear
- Torque sensor and Shimano 7-speed gears
- 960 Wh battery; up to 85 miles on assist level 1, says Addmotor
- 350 lb rider limit plus 100 lb of cargo
- Parking brake, differential, backrest, 2-year warranty
The catch: You lift your foot 17.5 inches to get on, four inches more than on a Lectric or a Granite. It does not fold, it is about 78 inches long and 32 inches wide, and Addmotor does not publish a clear weight on the page (one answer there mentions about 123 lb). Measure your doorway and your shed before you order.
Where can you ride it, and how do you ride it safely?
Addmotor's figure: 20 mph top speed. Federal product law (15 U.S.C. 2085) describes a low-speed electric bicycle as a two- or three-wheeled vehicle with working pedals, a motor of less than 750 watts and under 20 mph on motor power alone. Where you may ride is set by your state and city (see the PeopleForBikes summaries): check yours. This isn't legal advice.
A trike doesn't lean, so slow down before every corner. Set the parking brake before you get on or off. The CPSC says to stay present while the battery charges, use the maker's charger and wear a helmet on every ride.
Addmotor Grandtan M-340 specifications
| Motor | 750 W |
|---|---|
| Drive | Rear motor |
| Battery | 48 V 20 Ah (960 Wh) |
| Range (brand figure) | Up to 85 miles on assist level 1 (Addmotor) |
| Top speed | 20 mph top speed |
| Total payload | 350 lb rider plus 100 lb of cargo |
| Trike weight | Not stated |
| Stand-over height | 17.5 in |
| Rider height | 5'2" to 6'4" |
| Tires | 24 × 4 in front, 20 × 4 in rear |
| Brakes | Disc brakes on all three wheels |
| Parking brake | Yes |
| Rear differential | Yes |
| Gears | 7-speed |
| Pedal sensor | Torque sensor |
| Throttle | Half-twist |
| Suspension | Front fork, 80 mm of travel |
| Seat backrest | Included |
| Baskets | Rear basket |
| Folds | No |
| Certification | UL 2849 and UL 2271 |
| Delivered | Ships 85% pre-assembled |
| Warranty | 2-year warranty |
| Returns | Not stated |
"Not stated": not on the pages we read on November 13, 2026. Range, speed and payload are Addmotor's own figures.
Why 9.2/10? The score, criterion by criterion
Each criterion is scored out of 10 from the published figure; what the brand doesn't publish scores 2. This trike rounded to the same figure as the one ranked just above it; the published tie-break (price per watt-hour of battery, then warranty) places it one step below, so that no two trikes share a score. The full method is public.
| Price, against the catalog median (20%) | 6.0/10 |
|---|---|
| Stability and brakes (20%) | 8.5/10 |
| Battery energy in watt-hours (15%) | 9.4/10 |
| Stand-over height (10%) | 6.3/10 |
| Total payload capacity (10%) | 9.3/10 |
| Warranty (10%) | 6.5/10 |
| Comfort and carrying (10%) | 10.0/10 |
| Return or trial window (5%) | Not published: 2.0/10 |
How much is the Addmotor Grandtan M-340, and where do you buy it?
$2,199 on Addmotor's own US store on November 13, 2026. Sale price shown on November 13, 2026 (Black Friday period); the crossed-out list price on the page was $2,899.
If that is more than you planned, the Mokwheel Granite costs $1,999.99 and scores 9.5/10. One step up, the Emojo Caddy Pro is $2,599 for 8.9/10. We link to the brand's store because that is where we read the price and the stock.
What should you ask Addmotor first?
- What does the Grandtan M-340 weigh with its battery?
- What is your return policy, and who pays the freight back?
- Does the 2-year warranty cover the battery for both years?
- Is the parking brake on one lever or both?
Which trikes should you compare it with?
The two trikes closest in price: Mokwheel Granite ($1,999.99, 9.5/10) and Emojo Caddy Pro ($2,599, 8.9/10). Put all three side by side.
Head-to-heads: Addmotor Grandtan M-340 vs Emojo Caddy Pro, Addmotor Grandtan M-340 vs MaxFoot MF-30, Addmotor Grandtan M-340 vs Addmotor Greattan L.
Rankings with this trike: best electric trikes, fat tire electric trike, electric trike for heavy adults.
Guides that mention it or help you decide: how to choose an electric trike.
Where do these figures come from?
- addmotor.com/products/grandtan, read November 13, 2026
Not medical or legal advice: rules vary by state and city, and your doctor knows your health.
