47 mm gravel bike tire pressure chart
Recommended pressures for 47 mm (700×47) gravel tires by rider weight — the consensus of the SRAM AXS, Silca Pro and Pirelli Cycl-e ID calculators, computed for fine gravel — smooth, hard-packed dirt roads with a 10 kg bike.
Start at 28 psi front / 30 psi rear (tubeless) or 30 / 32 psi with tubes, then adjust ±2 psi by feel.
Pressure by rider weight
| Rider weight | Tubeless | With tubes | ||
|---|---|---|---|---|
| Front | Rear | Front | Rear | |
| 50 kg (110 lb) | 21 | 22 | 23 | 24 |
| 55 kg (121 lb) | 22 | 23 | 24 | 26 |
| 60 kg (132 lb) | 23 | 25 | 26 | 27 |
| 65 kg (143 lb) | 25 | 26 | 27 | 29 |
| 70 kg (154 lb) | 26 | 28 | 29 | 31 |
| 75 kg (165 lb) | 28 | 30 | 30 | 32 |
| 80 kg (176 lb) | 29 | 31 | 32 | 34 |
| 85 kg (187 lb) | 31 | 33 | 33 | 35 |
| 90 kg (198 lb) | 32 | 34 | 35 | 37 |
| 95 kg (209 lb) | 34 | 36 | 36 | 38 |
| 100 kg (220 lb) | 35 | 37 | 38 | 40 |
| 105 kg (231 lb) | 37 | 39 | 39 | 41 |
| 110 kg (243 lb) | 38 | 40 | 40 | 43 |
All values in psi (divide by 14.5 for bar). Assumes a 10 kg bike and hooked rims.
What each calculator says
For a 75 kg rider on 47 mm tubeless, the three tools land 8 psi apart on the front wheel. That spread is normal — each brand optimises for something different.
| Calculator | Front psi | Rear psi |
|---|---|---|
| Silca Pro | 25.3 | 27.1 |
| SRAM AXS | 33.2 | 36 |
| Pirelli Cycl-e ID | 25.2 | 25.8 |
| psi.bike consensus | 28 | 30 |
The chart assumes a 10 kg bike on fine gravel — smooth, hard-packed dirt roads. The calculator lets you set bike weight, seven surface types, hookless rims and tubeless — and ask follow-up questions.
Open the calculator pre-filled →Common questions
It depends on your weight. A 75 kg rider on 47 mm (700×47) tubeless tires should start around 28 psi front and 30 psi rear on fine gravel — smooth, hard-packed dirt roads. Use the chart above to find your weight, then fine-tune by feel.
Yes. More of your weight sits over the rear wheel, so all three calculators recommend a lower front pressure — typically 2 psi less at this tire width.
Roughly 2–3 psi. Without an inner tube there is no pinch-flat risk, so the calculators subtract a small margin. The chart shows both tubeless and tubed columns.
Each brand models the problem differently: SRAM weights compliance, Silca optimises rolling resistance over surface roughness, and Pirelli scales strongly with rider weight. On this setup they spread across 8 psi (front). psi.bike shows the consensus of all three.
Values are computed from psi.bike's calibrated models of the SRAM AXS, Silca Pro and Pirelli Cycl-e ID calculators and are starting points, not guarantees. Always respect the maximum pressure printed on your tire sidewall and rim, and adjust for conditions.