Tire Fit Gauge


How wide a tire can I fit on this bike? It’s a common question, especially when converting a bike from one wheel size to another. The Tire Fit Gauge eliminates the guesswork: One end hooks over an axle placed in the dropouts. The other end has slots for three wheel sizes: 559 mm (26”), 584 mm (650B) and 622 mm (700C). Discs that represent different tire widths fit into the slots: 23, 34, 38, 42, 48 and 54 mm. Slide a disc into the slot for a rim diameter, and rotate the gauge around the axle to check the clearances for this tire size all around the frame.

Designed for 13 mm dummy axles in frame jigs, the Tire Fit Gauge can be used with other axles if their diameter is increased with a few layers of tape.

The gauge is laser-cut from plastic. Remove protective cover before you use it.

Made in the USA.

In stock

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