Fat tires are adjustable by air
The BroPath 73D rides on 20x4.0-inch fat tires — wide, grippy, and surprisingly tunable. The same tire that floats over soft sand can also roll efficiently on pavement, simply by changing air pressure. At $598 (compared to a $1119 list price), the 73D is the all-terrain flagship of the BroPath line.
Lower pressure for soft ground
On sand, snow, or loose trails, drop the pressure for a larger contact patch. The tire conforms to the surface, spreading your weight so you do not sink. The 4.0-inch width means even a low-pressure setting stays stable, giving the 73D its famous float over terrain that stops thinner tires cold.
Higher pressure for pavement
On roads and boardwalks, add a few psi to reduce rolling resistance and make the 73D quicker and quieter. You lose a little cushion but gain range and speed for commute-style rides. A simple floor pump with a gauge is all you need to switch modes in a minute, so one bike serves weekdays and weekends. Check pressure every couple of weeks — fat tires hold air well, but a quick top-up keeps the ride predictable.
Pick the right BroPath for the surface
The 73D owns the rough stuff, but smoother rides have their picks too. The BroPath A1 folds to 14 inches for $249 city commutes, the BroPath A6 adds a basket at $249 for errands, and the BroPath Q5 delivers a 500W Class 2 city cruiser at $299.
Roll your way
The BroPath 73D ships from the US warehouse in about 5 business days. Learn the pressure trick and one fat-tire bike becomes a four-season, multi-surface machine.