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CycleMach

Rim & Tire Compatibility Calculator

Enter your rim's inner width below to instantly find the recommended tire width range for your E-Bike.

Find Your Tire Size

Recommended Tire Width Enter a width above

Standard ETRTO Size Matching Guide

Reference table for standard internal rim widths and matching tire clearances.

Rim Inner Width Recommended Tire Width
13mm - 15mm 23mm - 28mm
15mm - 19mm 28mm - 44mm
19mm - 21mm 35mm - 50mm
21mm - 25mm 40mm - 64mm
25mm - 30mm 50mm - 75mm+