Super73 · Fat tire
Super73 Z Miami: real range, hills and charging
A 180 lb rider on the Super73 Z Miami at 16 mph with relaxed pedaling over rolling hills (±2%) on pavement can expect about 29 miles per charge (23–35 mi), using 14.9 Wh per mile. The brand claims up to 35 miles. That is about 83% of the claim. On throttle only over hills it drops to about 20 miles.
480
Wh battery
500
W motor
20
mph max
Price checked 2026-10-20. We may earn a commission.
How far does the Super73 Z Miami go for your weight?
Miles per full charge on a new battery at 70°F on pavement, no wind. Each number is the middle of a ±20% band. Super73 claims 25–35 miles (25+ mi at 20 mph under class 2 throttle-only; varies with rider weight, speed, temperature, wind, tire pressure, terrain, incline).
| Rider weight | Easy 12 mph | Everyday 16 mph | Fast 20 mph | Throttle, hills |
|---|---|---|---|---|
| 150 lb | 47 mi (38–57) | 31 mi (24–37) | 21 mi (17–26) | 22 mi (17–26) |
| 200 lb | 41 mi (33–50) | 28 mi (22–34) | 20 mi (16–24) | 19 mi (15–22) |
| 250 lb | 37 mi (29–44) | 25 mi (20–30) | 19 mi (15–23) | 16 mi (13–20) |
| 300 lb | 33 mi (26–39) | 22 mi (18–27) | 18 mi (14–21) | 14 mi (12–17) |
- Easy 12 mph: 12 mph, relaxed pedaling, flat
- Everyday 16 mph: 16 mph, relaxed pedaling, rolling hills
- Fast 20 mph: 20 mph, relaxed pedaling, rolling hills
- Throttle, hills: 15 mph, no pedaling, hilly
Can the Super73 Z Miami climb hills?
Highest steady speed on each grade, motor at an estimated 800 W peak. A 10% grade is a steep city street; 15% is a hard hill.
| Rider | 5% grade | 10% grade | 15% grade |
|---|---|---|---|
| 180 lb, throttle | 17 mph | 10 mph | 7 mph |
| 180 lb, pedaling | 18 mph | 11 mph | 8 mph |
| 250 lb, throttle | 14 mph | 8 mph | 5 mph |
| 250 lb, pedaling | 16 mph | 9 mph | 6 mph |
Steepest grade at 8 mph (180 lb): 13% on throttle, 15% with moderate pedaling. Peak power lasts for short hills; on long climbs motors fall back toward their 500 W nominal rating.
Charging time and cost
Empty to full (2 A)
4 h 44 min
With a 5 A charger
2 h 30 min
Cost per full charge
$0.10
Cost per mile
0.32¢
US average residential electricity, 18.31¢/kWh (EIA, July 2026), 85% charger efficiency. Charge time: constant current to ~85%, then about an hour of top-off.
Range in cold weather
70°F
29
mi · 100% cap.
50°F
27
mi · 94% cap.
32°F
23
mi · 85% cap.
20°F
20
mi · 75% cap.
Everyday scenario, 180 lb rider. Capacity loss is temporary; store and charge the battery indoors and never charge it below freezing.
Simulate your own ride on the Z Miami
Super73 Z Miami specs
From the Super73 product page, checked 2026-10-20. est. marks values Super73 doesn't confirm.
- Price
- $2,195
- Class
- Class 2, throttle
Source note
Sold in Class 2 mode; Super73 says app pairings after 2025-01-01 cannot access other modes
- Top assisted speed
- 20 mph
- Battery
- 480 Wh (48 V × 10 Ah), removable
Source note
UL2271-compliant battery. Removable battery and cadence (not torque) pedal sensing assumed; not stated on official spec table
- Motor
- 500 W nominal, rear hub
- Torque
- Not published est.
Source note
Not stated on official page
- Pedal sensor
- Cadence
- Claimed range
- 25–35 mi (25+ mi at 20 mph under Class 2 throttle-only; varies with rider weight, speed, temperature, wind, tire pressure, terrain, incline)
- Weight
- 59 lb with battery
- Max load
- 325 lb rider + cargo
Source note
Rider weight limit (no separate total payload stated)
- Wheels & tires
- 20" × 4"
- Frame
- Compact moped-style aluminum, rigid, single speed, mechanical brakes; 20x4in VEE Trooper tires; rider height 4'6"-5'11"
- Charger
- Not published (we assume 2 A) est.
Source note
Charger amps not stated; official charge time 5 hrs
- Safety certification
- UL 2271 (battery)
Common questions
What is the weight limit of the Super73 Z Miami?
Super73 rates the Z Miami for 325 lb total (rider plus cargo). At 300 lb it still goes about 22 miles in everyday riding.
Can the Super73 Z Miami climb steep hills?
On throttle alone, with a 180 lb rider, it can hold 8 mph up a grade of about 13% (our estimate from its 800 W estimated peak power). With moderate pedaling, about 15%. On a 10% hill it holds about 10 mph on throttle.
How long does the Super73 Z Miami take to charge?
About 4 h 44 min from empty with the 2 A charger, or about 2 h 30 min with a 5 A fast charger. A full charge costs about $0.10 at the US average of 18.31¢/kWh, or 0.32¢ per mile.
Is the Super73 Z Miami a Class 2 or Class 3 e-bike?
Super73 lists it as Class 2, with a top assisted speed of 20 mph and a throttle.
Which hitch racks fit the Z Miami?
At 59 lb with battery (about 54 lb without it) and 4" tires, 16 of 23 hitch racks we track can carry it.
| Kuat Piston ION 2-bike | 100 lb/bike | Fits |
| 1UP USA Super Duty Double | 100 lb/bike | Fits |
| Saris MHS 2 Bike Package | 100 lb/bike | Fits |
| Aventon Hitch Rack Pro | 85 lb/bike | Fits |
| Yakima OnRamp LX | 80 lb/bike | Fits |
| Hollywood Racks Sport Rider for Electric Bikes | 80 lb/bike | Fits |
| Hollywood Racks RV Rider E-Bike Rack | 80 lb/bike | Fits |
| Aventon Hitch Rack | 77 lb/bike | Fits |
| Yakima StageTwo | 70 lb/bike | Fits |
| Hollywood Racks Destination E | 70 lb/bike | Fits |
| Allen Sports High Capacity Locking Premier for Electric Bikes | 70 lb/bike | Fits |
| Kuat Piston Pro X 2-bike | 67 lb/bike | Fits |
| Thule T2 Pro XTR 2-bike | 60 lb/bike | Fits |
| Kuat NV 2.0 2-bike | 60 lb/bike | Fits |
| Kuat NV Base 2.0 2-bike | 60 lb/bike | Fits |
| Saris SuperClamp G4 2-Bike | 60 lb/bike | Fits |
Doesn't fit: Thule Epos 2-bike (tires too wide), Yakima OnRamp (tires too wide), Thule EasyFold XT 2 (tires too wide), 1UP USA Heavy Duty Double (tires too wide), Saris Door County 2-Bike Motorized (tires too wide), Hollywood Racks Sport Rider SE2 (tires too wide), Saris Freedom G2 2-Bike (tires too wide).
All hitch racks →
