WHAT IS IT?
The WTB Tire & Rim Compatibility Chart is used to determine what tire and rim width combinations provide optimal performance and compatibility. By matching your tire section width to your rim width you can determine optimal, compatible, or not optimal fitting options to ensure the best tire & rim combination.
HOW DOES IT WORK?
Tire section width is used to most accurately determine the size designation of a tire. Also commonly referred to as “casing width,” section width is expressed as the first two digits in the ETRTO size designation “XX – XXX” marked on the sidewall of every WTB tire. For example, the Vigilante 2.5 29" tire is marked with and ETRTO size designation of 60-622, which indicates a tire section width of 60mm.
Inner rim width is the second variable affecting tire and rim compatibility. Inner rim width is measured at the narrowest point between a rim’s upper “G-Legs” at the bead hook (all WTB rims have a bead hook, but some rim manufacturers do not – the measurement location is the same). All WTB rims are named according to their inner rim width (i25 means the inner rim width is 25mm), but that may not be the case with rims made by other companies. All rims, regardless of manufacturer, should be marked with their ETRTO designation of XX-XXX. The first two digits refer to the inner rim width.
Filled boxes designate compatibility while also providing optimal tire profile and performance.
Dots indicated less ideal performance, but are still within the range of compatibility.
Empty boxes designate a tire and rim pairing that is potentially unsafe and should not be used.
The suggestions above extend beyond current ETRTO recommendations, but allow for more optimal performance. Proceed at your own risk.