Bicycle Tyre Pressure Calculator 2026
Find your perfect tyre pressure in PSI, bar, or kPa. Enter your rider weight, tyre width, and bike type to get tailored front and rear pressure recommendations for any terrain.
Rider & Bike Specifications
Enter your details for a personalised pressure recommendation
Rider bodyweight only — bike weight is automatically factored in
Include any bags, accessories, or loaded panniers
Riding position affects front/rear load split
Road: 23–32mm · Gravel: 35–50mm · MTB: 1.9–2.6in
Tubeless setups can safely run 10–15% lower pressure
Wet or muddy conditions call for 5–10% lower pressure for grip
Tyre Pressure Recommendation
Front & rear pressures tailored to your setup
Enter your rider weight, tyre width, and bike type above, then click Calculate Tyre Pressure to get your personalised front and rear PSI recommendation.
Tyre Pressure by Bike Type
Typical pressure ranges for common bike categories. Always check the minimum and maximum pressures printed on your tyre sidewall, and adjust within that range based on rider weight and terrain.
| Bike Type | Tyre Width | Tubed Range | Tubeless Range | Notes |
|---|---|---|---|---|
| Road Bike | 23–25mm | 90–120 PSI | 80–105 PSI | High pressure, low rolling resistance |
| Road Bike | 28–32mm | 70–95 PSI | 60–85 PSI | Wider = more comfort at lower PSI |
| Gravel Bike | 35–45mm | 40–65 PSI | 30–55 PSI | Balance of speed and compliance |
| MTB — XC | 1.9–2.2in | 28–38 PSI | 22–32 PSI | Fast rolling, harder surfaces |
| MTB — Trail | 2.2–2.5in | 24–32 PSI | 18–26 PSI | Balance of traction and support |
| MTB — Enduro/DH | 2.4–2.6in | 22–28 PSI | 16–22 PSI | Low pressure for grip; use inserts |
| Hybrid / City | 32–42mm | 50–75 PSI | N/A | Comfort-focused; check sidewall |
| Touring / E-Bike | 38–50mm | 45–70 PSI | 35–60 PSI | Higher weight needs more pressure |
Tyre Pressure FAQ
Everything you need to know about finding the right tyre pressure for your bike, from PSI ranges and rider weight to tubeless setups and wet weather adjustments.
Road bike tyre pressure typically ranges from 80 to 130 PSI (5.5 to 9 bar) depending on rider weight and tyre width. Lighter riders on 25mm tyres can use 90–100 PSI, while heavier riders or those on 28mm tyres may prefer 80–90 PSI. Modern wider tyres at lower pressures often provide better grip and comfort without sacrificing speed.
Mountain bike tyre pressure typically ranges from 18 to 35 PSI (1.2 to 2.4 bar) depending on tyre width, terrain, and rider weight. Wider tyres (2.3in+) on technical trails can run as low as 18–22 PSI. Narrower cross-country tyres may need 28–35 PSI. Tubeless setups allow lower pressures without the risk of pinch flats.
Heavier riders require higher tyre pressure to support more weight and maintain an optimal contact patch. As a general rule, add approximately 1 PSI for every 5 kg above 70 kg of total rider and bike weight. Conversely, lighter riders should reduce pressure to increase tyre compliance and grip.
No — the rear tyre should be slightly higher than the front. The rear wheel carries around 60% of total weight on most bikes, so it typically needs 3–5 PSI more than the front on road bikes, and 2–3 PSI more on mountain bikes. This prevents squirm and pinch flats at the rear while keeping the front tyre compliant for steering grip.
PSI (pounds per square inch), bar, and kPa (kilopascals) are all units of pressure. 1 bar equals approximately 14.5 PSI and 100 kPa. Road tyres are often listed in PSI in the USA and bar in Europe. Most floor pumps display both PSI and bar. kPa is less common for cycling but appears on some professional gauges and Schrader-valve packaging.
Yes. Reducing pressure by 5–10% in wet conditions increases the tyre’s contact patch and improves grip on slippery surfaces. On a road bike in the rain, dropping from 90 PSI to 80–85 PSI can measurably improve cornering confidence. On an MTB in mud, lower pressure also helps the tyre deform around obstacles for better traction.