Tire Pressure and Tire Width

Tire pressure calculator

A starting point for tubeless pressure on 9th Wave rims, built from our own test rides. Set it, ride it, and adjust from there.

Discipline
Wheel size

mm

Actual width as printed on the tire.

kg

Everything the wheels carry.

bar

This is a starting point. Rider weight, terrain, tire casing and personal preference all change what feels right, so adjust from here in small steps of 0.1 bar. The result never goes above the lowest of the rim maximum and the maximum printed on your tire, whatever your weight. That lowest value is your upper limit, whatever the calculator says.

Also check the minimum pressure printed on your tire, and use a gauge you trust, because cheap pump gauges can be off by 0.3 bar or more.

Using the result

The calculator gives a starting point, not a verdict. Terrain, tire casing, rider weight and personal preference all change what feels right, so ride it and adjust in steps of 0.1 bar. A wider tire carries the same load on more air volume, which is why the advice drops as the tire gets wider.

Your upper limit is the lowest of two numbers: the maximum of your rim and the maximum printed on your tire. If the rim maximum is lower than the tire maximum, the rim wins. The table below lists the maximum per rim.

Hookless (straight side) rims are made for tubeless-ready tires only (TLR or TLE), whether you ride road, gravel or MTB. Check the compatibility and the minimum tire width stated by the tire and rim manufacturer.

For most of our road and gravel wheels the maximum weight of rider, bike and luggage together is 120 kg. Above that, choose a wider rim with a larger tire, which runs stable at a lower pressure.

We regularly see wide tires on older rims that were designed for 25-28 mm tires at most. The larger volume asks for a lower pressure, and the maximum on the tire and the rim still applies. A tire that comes off the rim can damage both.

Maximum pressure per rim

The pressure you ride may never exceed the maximum of your rim, whatever the tire allows. The Avalon 454 SL is made for tires of 28 mm and wider.

RimTypeInside widthMaximum pressure
Avalon ONEHooked23.5 mm7.0 bar
Avalon SL3Hooked23.5 mm6.5 bar
Avalon SL5Hooked23.5 mm6.5 bar
Avalon 454 SLHookless24 mm5.0 bar
Anath ONE All-RoadHooked25 mm5.5 bar
Anath 456 SLHookless26.5 mm5.0 bar
Anath 650Hookless27 mm3.5 bar
Yarrow ONEHookless30 mm3.0 bar
Yarrow SL29Hookless32 mm3.0 bar
Yarrow SL32Hookless32 mm3.0 bar
4-ShoreHookless33 mm3.0 bar
Anath 423Hookless33 mm3.0 bar
SandStoneHookless37 mm3.0 bar
SandStone SL32Hookless37 mm3.0 bar

Other rims: maximum pressure by tire width

If you ride a rim that is not in the list above and enter it as another rim, the calculator uses these general limits by tire width. For 9th Wave rims the maximum in the table above applies.

Hookless rims
Tire widthMaximum pressure
25-29 mm5.0 bar
30-34 mm4.5 bar
35-39 mm4.0 bar
40-44 mm3.0 bar
45-54 mm2.5 bar
55-64 mm2.0 bar
65-84 mm1.5 bar

Hooked rims
Tire widthMaximum pressure
25-27 mm8.0 bar
28-30 mm6.0 bar
31-40 mm3.2 bar

Questions about rims, tires or the right pressure? Get in touch and we will help you out.