Tire Pressure Calculator
Calculate suggested front and rear tyre pressure from total weight, actual tyre width and diameter, surface, expected speed, casing category and bike type.
- Front
- 4.70 bar68 PSI
- Rear
- 4.85 bar70 PSI
78 kg · 30 mm · 31 km/h · Μερικά σπασίματα
Front and rear tire pressure Front 4.70 bar · 68 PSI. Rear 4.85 bar · 70 PSI
How it works
Enter total system weight: rider, bike and equipment. Select surface, actual measured tyre width and diameter, casing category, expected average speed and bike type. The calculator automatically updates suggested front and rear tyre pressure.
What to keep in mind
This is not an absolute optimum pressure, a compatibility check or a safety guarantee. Your actual choice also depends on the specific tyre and casing, internal rim width, temperature, grip, technical ability and exact weight distribution. Never exceed the rim or tyre manufacturer’s pressure limits. For hookless systems, check the limit for the specific rim–tyre combination.
Methodology & sources
The calculator estimates breakpoint pressure from total weight, actual tyre width and diameter, surface, expected speed, casing category and estimated front–rear weight distribution. The model follows the publicly available logic and input categories of the SILCA Pro Tire Pressure Calculator and has been checked against selected reference cases. It is not an official SILCA tool, independent laboratory validation or a rim–tyre compatibility check. Pressures are calculated without intermediate rounding and displayed to the nearest 0.5 PSI and 0.05 bar.
Last updated: 25 July 2026
The right pressure is part of the whole cycling system.
A few PSI can change grip, comfort, rolling resistance and the fatigue transmitted to your body. Together, we can combine pacing, position, equipment and race strategy so your bike works as one complete system.