How To Measure Rim Width Bike. It’s common for modern rims to measure around 21mm for road and 30mm for mountain (internal width). The shaded area shows the possible rims for a tire size including the recommended fitment.

If you want to go down to a 25mm tire for example, your rim would need to be no wider than 18 or 19mm on the inside. 50~65mm inner width rim for 4.0 tires and 3.5 tires. Rim width is the distance from the outboard bead seat to the inboard bead seat.

### The Result Is The Rim's Spoke Hole Lateral Offset (Or Just Rim Offset), I.e.

Measure the rim width (w) and divide by two. We don’t suggest choosing the largest or smallest values of a size range. How do you measure rim width?

### It’s Common For Modern Rims To Measure Around 21Mm For Road And 30Mm For Mountain (Internal Width).

The amount by which the rim reduces your wheel's dish. If you want to go down to a 25mm tire for example, your rim would need to be no wider than 18 or 19mm on the inside. Just take a ruler, yardstick or tape measure and measure the distance from bead seat to bead seat.

### Rim Width Tyre Size 1.5 Wm0 1.6 Wm1 1.85 Wm2 2.15 Wm3 2.50 2.75 3.00 3.50 4.25 5.00/5.50 5.75 2.25 Std 2.50 Std 2.75 Std 3.00 Std 3.10 Std 3.25 Std 3.50 Std 3.60 Std 4.00 Std 5.00 Std 80/90 Std 90/90 Std 100/90 Std Rim Width

Set up your bike with a kickstand, or you can also lean it up on a wall. If you remove the tire and measure the internal rim width, you can determine the minimum and maximum tire sizes it can support. Measure the distance from the near sidewall to the center of the average spoke hole (l).

### In The Last 10 Years, Rim Widths Have Grown Tremendously.

Few recommends for your ref. Remember that the width of the tire may vary according to how it’s used. To use the traditional method, use the inches unit.

### With A 28Mm Tire, You Could Get Away With A 20Mm Or 21Mm Internal Rim Width.

For example, with a range from 1.9” to 2.1”, 2.0” is an optimal option for most riders. 50~65mm inner width rim for 4.0 tires and 3.5 tires. Here is a quick video on how to take off your wheel and tire to determine your rim width.

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