Origin8 Tsunami Tire

While the Tsunami is optimized for loose terrain like sand and snow, its well-spaced lugs help keep rolling resistance manageable. However, because it is a knobby fat tire, you will notice more vibration and noise on smooth pavement compared to a slick or hybrid tire.

TPI stands for Threads Per Inch. A 30 TPI casing is on the lower end, which makes the tire sidewalls stiffer and more durable against punctures and heavy loads. While it may feel slightly less supple than a higher TPI tire, it provides the rugged reliability needed for demanding off-road conditions.

No, this is a 20x4.0-inch fat tire designed specifically for fat-tire bikes and trikes with a 406 mm ISO diameter. It will not fit standard 26, 27.5, or 29-inch mountain bike rims.

Wire bead tires are generally stiffer and heavier than folding Kevlar beads, which can make them slightly more challenging to mount onto the rim. However, the wire bead provides a very secure fit once seated, which is ideal for the lower pressures often used in fat biking.

The maximum pressure for the Origin8 Tsunami is 20 PSI. For optimal performance in soft conditions like snow or sand, you will likely want to run them at a significantly lower pressure to increase the contact patch and improve floatation.