Less than in-between: Our rollout revealed that the 27. 5 rolls
closer to the 26er (it is 4. 12 percent bigger) than it does to the
29er (where there is a 5. 71 percent jump). Our results will change
the way we refer to the new wheel size in the future.
Slightly disputed champ: The 29er is no doubt the big wheel of
the bunch, but we couldn’t get it to reach the 29-inch diameter
mark. It came out as 28. 5 inches. No, we are not going to start
referring to them as such.
The rack: Tire pressure was set at 30 psi
for every tire before each rollout. The
MBA-calibrated and board-certified rollout
test rig (two 10-foot 2x4s joined evenly at
each end) lies ready on the pavement to
accept our parade of wheels.
Starting line: A straight edge was
used to mark the starting line for our
Ready to roll: The wheel’s valve stem was
centered on the starting line, sighting from
both the top and side to remain as accurate as possible.