Image: manufacturer · Source
Specialized
Tested
Mid-field
24.5 W · rank 10 of 20 comparable XC tires
7.8 W behind the best value in the same test series. Fewer watts is better – every watt saved stays in the drivetrain.
Leichter XC-Reifen mit gutem Nassgrip-Messwert.
Width, casing, compound and pressure – every value on this page follows your pick.
Width, casing and compound decide how a tire really rides. We only show what was actually measured – and label estimates honestly.
Reference: recommended pressure 24 psi (1.65 bar) – an assumption, not a test pressure.
More pressure: less rolling resistance, less grip, less comfort. Tougher casing: more protection, more weight. Softer compound: more grip, more rolling resistance.
Modelled values are assumptions based on the stated measurement points – not a lab test.
Editorial assessment on a 1–10 scale. Grip index: 7.7
These grades describe the tire model, not one specific width or compound – no reliable per-version grades exist.
No data
Scores from 1 to 10: higher is better.
Every variant the manufacturer lists, with its own claimed data. Missing values stay blank.
| 29" | 2.2" | Flex Lite(Light) | T5/T7 | 575 g | ||
| 29" | 2.35" | Flex Lite(Light) | T5/T7 | 585 g | ||
| 29" | 2.35" | Grid Lite(Light) | T5/T7 | 680 g |
The value in brackets is our brand-neutral casing class (Light, Trail, Enduro, Downhill) – not a manufacturer statement.
Real test-rig values – not an estimate. Tested variant: Air Trak Flex Lite T5/T7 2.35 (gemessene Variante).
Watts measured on the test rig: lower is better. The 1-10 ratings on this page: higher is better.
No lab of our own: measurements come from the third-party test named above – the source is linked directly.
Rank 9 of 20 · lower is better
Rank 3 of 20 · higher is better
Rank 2 of 20 · lower is better
Tested: Calculated from the stored measurements – compared only within the same test series and category (XC).
Mid-field
24.5 W · rank 10 of 20 comparable XC tires
7.8 W behind the best value in the same test series. Fewer watts is better – every watt saved stays in the drivetrain.
Strong in comparison
69 points · rank 5 of 20 comparable XC tires
3 points behind the best value in the same test series. More points means more compound grip on smooth surfaces.
Strong in comparison
596 g · rank 2 of 20 comparable XC tires
4 g behind the best value in the same test series. Fewer grams is better, but usually costs casing stability.
Measurements from different test rigs are not directly comparable – Sources & method.
Our own summaries – the full test is available at the source.
MTB-News.de
March 2025The all-new Specialized Air Trak was tested as a fast front tire for XC race courses. It rolls noticeably faster than comparable models while still offering sufficient control in fast corners. Paired with the Fast Trak, it forms a well-matched race combo.
To the source
Vittoria