Tubeless vs. Inner Tube: What Tire Pressure to Run With Each
Tubeless vs. inner tube pressure for MTB, road and gravel, with charts by tire width, plus what to consider when choosing a setup.
Quick answer: with tubeless you run lower pressure than with an inner tube: about 3.5 psi lower on an MTB with 2.4" tires, 10% lower on the road and 8% lower on gravel.
The reason is simple: with an inner tube, if the pressure is too low, a hard hit pinches the tube between the tire and the rim and you get a flat. With tubeless there's no tube to pinch, so you can drop the pressure and gain grip, comfort and traction.
The charts in this guide are calculated with the same formulas used by MTBPro and ROADPro.
How to read the charts
Each cell shows front / rear in psi. Each chart compares the same rider on the same terrain with both setups, across different tire widths.
MTB: tubeless vs. inner tube
75 kg rider with 16 kg of bike and gear, 29" wheels, mixed terrain and Trail riding style:
| Width | Inner tube | Tubeless |
|---|---|---|
| 2.2" | 23.5 / 30 | 20 / 26.5 |
| 2.3" | 21.5 / 27.5 | 18 / 24 |
| 2.4" | 20 / 25.5 | 16.5 / 22 |
| 2.5" | 18.5 / 23.5 | 15.5 / 20.5 |
| 2.6" | 17.5 / 22 | 14 / 19 |
On an MTB, the extra pressure with an inner tube isn't a fixed percentage: it's between 2.5 and 5 psi more, and the difference grows as the tire gets narrower. A narrow tire has less air between the rim and the ground, so the tube pinches more easily.
Terrain is also handled differently depending on the setup. On rocky terrain, tubeless pressure drops more (2 psi front and 1.25 rear) so the tire conforms to the rocks; with an inner tube it drops less (0.75 and 0.5 psi) to avoid increasing the risk of a pinch flat.
Road: tubeless vs. inner tube
70 kg rider, 700c rims and pavement in good condition:
| Width | Inner tube | Tubeless |
|---|---|---|
| 23 mm | 105 / 110 | 94 / 99 |
| 25 mm | 95 / 100 | 86 / 90 |
| 28 mm | 86 / 90 | 77 / 81 |
| 30 mm | 78 / 82 | 70 / 74 |
| 32 mm | 71 / 75 | 64 / 68 |
Gravel: tubeless vs. inner tube
75 kg rider, 700c rims and mixed terrain:
| Width | Inner tube | Tubeless |
|---|---|---|
| 35 mm | 44 / 46 | 40 / 42 |
| 38 mm | 41 / 43 | 37 / 39 |
| 40 mm | 38 / 40 | 35 / 37 |
| 42 mm | 35 / 37 | 33 / 34 |
| 45 mm | 33 / 35 | 31 / 32 |
The minimums change too
Tubeless lets you go lower, but not indefinitely: with very little pressure the tire squirms in corners and the rim can hit the ground. These are the minimums the apps use:
| Inner tube | Tubeless | |
|---|---|---|
| Road (front / rear) | 40 / 45 psi | 30 / 35 psi |
| Gravel (front / rear) | 19 / 20 psi | 14 / 15 psi |
| MTB (front) | 1 psi more than tubeless | 13 to 15 psi depending on riding style, more for heavier riders |
On an MTB, the maximum also drops with tubeless and wide tires: 34 psi with tires 2.1" or wider and 32 psi with 2.4" or wider.
Which setup should you choose?
Tubeless is now the norm on MTB and gravel, and increasingly common on the road:
- It lets you run lower pressure without the risk of pinch flats: more grip and more comfort.
- The sealant plugs many small punctures on its own.
- It requires tubeless-compatible rims and tires, and you need to check and top up the sealant every so often.
- It loses some air over a few days, so it's a good idea to check your pressure before every ride.
Inner tubes still make sense:
- They're easier to install and to fix on the trail or roadside.
- They don't require specific rims or tires.
- The trade-off is that you need to run higher pressure to avoid pinch flats.
Whichever setup you choose, set it in the app: the recommended pressure changes quite a bit from one to the other.
Frequently asked questions
Why do you run lower pressure with tubeless?
Because there's no tube to pinch between the tire and the rim on a hard hit. With an inner tube, pressure that's too low causes pinch flats (the classic two holes, or "snake bite"); with tubeless that risk goes away, so you can drop pressure for more grip and comfort.
How much lower is tubeless pressure on an MTB?
Between 2.5 and 5 psi lower than with an inner tube, depending on tire width. With 2.4" tires, about 3.5 psi lower front and rear.
How much lower is tubeless pressure on road and gravel bikes?
10% lower on the road and 8% lower on gravel. For example, at 70 kg on 25 mm tires, you go from 95 / 100 psi with inner tubes to 86 / 90 psi tubeless.
Is there a minimum pressure for tubeless?
Yes. Even without a tube, pressure that's too low makes the tire squirm in corners and lets the rim hit the ground. On the road, ROADPro won't go below 30 psi front and 35 rear with tubeless; on gravel, 14 and 15 psi; on an MTB the minimum depends on riding style, weight and tire width.