Dirt Bike Tire Pressure Guide: Motocross, Trail, Sand, Rocks

Start at 15 psi front and rear, measured cold. That is the standard figure in the Honda, Yamaha and KTM owner’s manuals we checked. From there, go down toward 12 to 14 psi for motocross and soft dirt, and up toward 15 to 18 psi for rocks and fast, hard ground. Change it a pound at a time.

That advice is for a full-size bike on tubes. Tubliss and mousses change the picture, and we cover them below.

What tire pressure should you run for your terrain?

Every number here is a cold pressure for a tube-type tire, from the source named in the row.

Terrain or discipline	Front	Rear	Source
Stock setting, any terrain	15 psi	15 psi	Honda, Yamaha and KTM manuals
Motocross, hard or intermediate	12.5-13.5 psi	14 psi	Dunlop
Motocross, soft	12.5-13.5 psi	11-12 psi	Dunlop
Motocross, Starcross 6	13.1 psi	13.1 psi	Michelin (minimum 11.6)
Motocross, Battlecross X31	12 psi	12 psi	Bridgestone, as reported by MXA
Mud, sand, slippery	9-12 psi	9-12 psi	Yamaha manual
Rocks, stony or hard ground	15-18 psi	15-18 psi	Yamaha manual
Enduro, hare scrambles, trail	14-18 psi	14-18 psi	Dunlop
Enduro, Michelin Enduro Medium	14.5 psi	14.5 psi	Michelin (minimum 11.6 front, 8.7 rear)
Desert	14-18 psi	14-18 psi	Dunlop
Desert, Michelin Desert Race	17.4 psi	21.8 psi	Michelin (minimum 14.5)
Dual-sport, off-highway	22 psi minimum	22 psi minimum	Dunlop

Where each row comes from:

• The manuals. Honda’s CRF450X manual gives 15 psi (100 kPa) front and rear. Yamaha’s YZ450F manual gives the same 100 kPa standard, then 60 to 80 kPa (9 to 12 psi) for rainy, muddy, sandy or slippery conditions and 100 to 120 kPa (15 to 18 psi) for stony or hard ground. KTM’s 450 SX-F manual gives 1.0 bar (15 psi) front and rear for off-road. These are older model years, so check your own manual.
• Dunlop. Its off-road chart keeps the front at 12.5 to 13.5 psi in every condition and only moves the rear: 14 psi on hard and intermediate ground, 11 to 12 psi in soft. Its care guide says desert pressures are generally 14 psi minimum and 18 psi maximum, gives the same range for enduro and hare scrambles, and sets 22 psi as the off-highway minimum for dual-sport tires.
• Michelin. Its off-road pressure page lists a recommended and a minimum pressure for each tire.
• Bridgestone. We could not find an off-road pressure chart on Bridgestone’s own site. Motocross Action reports that Bridgestone calls for 12 psi in the Battlecross X31, and its testers settled between 12 and 13 psi.

We did not find a published off-road pressure chart from Pirelli or Maxxis, so there is no maker’s number for them here. Tester Kris Keefer’s pressure guide lists his own preference of 13.5 psi front and 14 psi rear on the Pirelli MX32 Mid Soft, and every motocross setting in his list falls between 12 and 14 psi.

So the sources disagree, but inside a narrow band: 12 to 15 psi for motocross. The bigger spread is between soft ground (as low as 9 psi) and fast, rocky ground (up to 18 psi, or nearly 22 in the rear of Michelin’s desert tire).

How much does the right pressure depend on the tire?

A lot. Michelin’s page is the clearest example, because one maker gives very different numbers for different tires.

Trial Light / Trial Competition5.8 psi

Enduro Xtrem11.6 psi

Starcross 6 (motocross)13.1 psi

Enduro Medium14.5 psi

Desert Race Baja17.4 psi

Desert Race21.8 psi

View as table

Item	Value
Trial Light / Trial Competition (minimum 5)	5.8 psi
Enduro Xtrem (minimum 8.7)	11.6 psi
Starcross 6 (motocross) (minimum 11.6)	13.1 psi
Enduro Medium (minimum 8.7)	14.5 psi
Desert Race Baja (minimum 14.5)	17.4 psi
Desert Race (minimum 14.5)	21.8 psi

Source: Michelin off-road tire pressure page, opened October 2026

A trials tire is built to wrap around a rock at walking pace. A desert tire has to survive rocks at speed for hours, and Dunlop notes that desert speeds are far greater than motocross or enduro, so the tire has to resist heat build-up. That is the racing we do, and it is why desert numbers sit at the top of every chart.

What does lower tire pressure do?

A softer tire flattens more where it meets the ground. The footprint gets longer and wider, the knobs conform to roots and rocks instead of bouncing off them, and the tire soaks up small chop. Yamaha’s manual puts it simply: lower the pressure in mud, sand and slippery conditions for more contact with the ground.

What you pay for it:

• Pinch flats. With less air holding the tire up, a square-edged hit can squash the tire until the tube is caught between the tire and the rim.
• Rim damage. Dunlop says underinflated tires may cause wheel damage on rocky, rough terrain. Honda’s manual says the same about hard terrain.
• Tire roll. Dunlop says an underinflated tire lets the bike squirm or wander on smooth, hard ground.
• Heat. KTM’s manual says low pressure leads to abnormal wear and overheating of the tire. Honda says underinflated tires are more likely to fail from being overheated.
• Tire spin on the rim. See the rim lock section below.

What does higher tire pressure do?

It protects the tube and the rim. Yamaha’s manual says to raise pressure on stony or hard ground to prevent flats.

The cost is grip and comfort. Dunlop says overinflation may damage the tires and cause an unnecessarily harsh ride, and Honda says overinflated tires ride harshly and are more prone to damage from surface hazards. A hard tire also deflects off rocks and roots rather than gripping them.

Should front and rear pressure be different?

The manuals say no: 15 and 15. The tire makers split them, and not always the same way.

Dunlop holds the front steady and tunes the rear, higher than the front on hard ground and lower in soft. Michelin runs the same pressure at both ends on its motocross and enduro tires, but puts 4.4 psi more in the rear of its Desert Race tire than the front. Michelin also allows the rear of its Enduro Medium to go lower (8.7 psi minimum) than the front (11.6 psi minimum).

The two tires do different jobs. The rear puts the power down, so that is where you chase drive in soft dirt. The front steers, and a front that rolls or washes is the one that puts you on the ground. If you are not sure, start equal and change one end at a time.

How do heavy-duty tubes, Tubliss and mousse change it?

Everything above assumes a tube. What is inside the tire changes how low you can safely go. We compare all three in mousse vs tubes vs Tubliss.

• Standard tube. The least pinch protection, so stay close to the table.
• Heavy-duty and ultra-heavy-duty tubes. The thicker wall resists pinches better and makes the tire feel a little firmer at the same pressure. None of the sources we read give a separate pressure for them, so start from the same numbers.
• Tubliss. There is no tube to pinch. Nuetech’s FAQ says to start 2 psi lower than you would with a tube, then come down 1 psi at a time until performance drops off and go back up 1 to 2 psi. Motocross Action’s testers ran 8 to 13 psi. The inner bladder is separate and has to be at 100 psi before every ride.
• Mousse. There is no valve, so there is nothing to set. Michelin says its Bib Mousse is equivalent to 11.6 to 14.5 psi. Nitromousse says a new Platinum feels like 11 to 12 psi and its Plushie like 6 to 8 psi. The feel softens as the foam wears.

When and how should you check tire pressure?

Before every ride, cold. Dunlop’s pre-ride list starts with checking air pressure. Bridgestone’s tire manual defines cold as ridden less than a mile at moderate speed, or parked for three hours or more.

Use a low-pressure gauge. A car gauge that reads to 60 or 100 psi cannot show you the difference between 12 and 13. Get one made for the 0 to 15 or 0 to 30 psi range, and use the same gauge every time, because two gauges rarely agree.

Do not bleed a hot tire. Pressure rises as the tire works. Michelin says you should never deflate a tire that has just been ridden on, and Bridgestone says letting air out of a hot tire to reach the cold figure can leave it dangerously underinflated.

Temperature. The usual rule, quoted by Les Schwab for car tires, is about 1 psi for every 10°F. That is written for tires at 30-plus psi. A dirt bike tire at 12 to 15 psi moves less than that per 10 degrees, but a tire set in a cool garage and then parked in the sun all morning will not be where you left it. Set pressure at the track, in the shade, close to when you ride.

Altitude. The air in the tire does not change, but the air outside gets thinner, so the gauge reads higher. Les Schwab puts it at 0.5 psi for every 1,000 feet. Set 13 psi at sea level, drive to a track at 5,000 feet, and the same tire reads about 15.5. Set it again when you get there.

What do rim locks have to do with tire pressure?

A rim lock is a clamp inside the tire that pinches the bead against the rim. At 12 psi there is not much air holding the bead in place, and hard acceleration or braking can spin the tire on the rim. The tube goes with the tire, the valve stem does not, and the stem tears out.

A valve stem leaning at an angle is the warning sign. Dunlop’s pre-ride list says to make sure the valve stem has not spun, and if it has, to deflate the tire and re-set it. It also says to make sure the rim lock is securely tightened. The lower you run, the more the rim lock matters, which is why a mousse still needs one.

What are the common mistakes?

• Never checking. Last month’s 13 psi is not this morning’s.
• Letting air out of a hot tire to get back to the cold number.
• Using a car gauge.
• Copying someone else’s number. Michelin’s own recommendations run from 5.8 to 21.8 psi depending on the tire.
• Going low on rocks for grip and paying for it with a pinch flat or a dented rim.
• Changing two things at once. Honda’s manual says to make changes a little at a time. One psi, one end, then ride it.
• Forgetting the rim lock after a tire change.
• Setting pressure at home and then driving up a mountain.

Tire pressure is the quickest check on the bike and the easiest one to skip. It sits in the before-every-ride section of our dirt bike maintenance schedule and on our motocross race day checklist.