Tubeless tyres 30 vs 32 mm: what width really changes
A wider tyre means lower pressure and more comfort, but not always more drag. We break down the difference between 30 and 32 mm.
For years the road standard was 23 or 25 mm. Today manufacturers keep moving toward 30-32 mm, because a wider tyre at lower pressure absorbs vibration better and grips the surface more securely.
Rolling resistance and comfort
Against intuition, a wider tyre at the same pressure can roll as well as or better than a narrow one, because its contact patch is shorter. The comfort gain on rough tarmac is clear, and fatigue on a long ride is lower.
When to stay at 30 mm
If you ride mostly smooth tarmac and every tenth of a second counts in short races, 30 mm saves a little weight and aero. For training and longer distances, 32 mm usually wins on comfort.