Bontrager XR1 Comp Mountain Tire

It is designed for both. The tread pattern is versatile enough to handle pavement efficiently while still providing the grip needed for hardpack and loamy trail conditions.

TPI stands for Threads Per Inch. A 60 TPI casing offers a good balance between durability and weight, making it robust enough to handle the rougher terrain kids often encounter without being overly heavy.

No, this model uses a wire bead construction. While wire beads are slightly heavier than folding versions, they are generally more durable and easier to seat securely on the rim.

The maximum pressure rating is 50 psi. Depending on your child's weight and the terrain, you may want to run it slightly lower for better traction on trails, but do not exceed the 50 psi limit.

This tire is sized 20 x 1.85 with an ETRTO of 56-622. While it fits most standard 20-inch wheels, you should verify that your bike's frame and fork have enough clearance for a 1.85-inch width before purchasing.