MTB Tire Guide

Hutchinson Python Race vs Specialized Air Trak

Short answer: Rolling resistance: Hutchinson Python Race leads with 24.5 W, Specialized Air Trak trails by 0 W.

Configure your build

Width, casing, compound and pressure – every value on this page follows your pick.

Hutchinson Python Race

Pressure (context)
Measured point

Specialized Air Trak

Tire width
29" wheel
Compound
Pressure (context)
Measured point
Measured value available
How we calculate

Width, casing and compound decide how a tire really rides. We only show what was actually measured – and label estimates honestly.

Hutchinson Python Race: Reference: recommended pressure 24 psi (1.65 bar) – an assumption, not a test pressure.

Specialized Air Trak: 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.

Size, weight and casing

Hutchinson Python RaceSpecialized Air Trak
Width2.4" (61 mm)2.35" (60 mm)
Wheel sizes29" · 27.5"29" · 27.5"
Weight592 g596 g
CasingRacing LabFlex Lite
CasingLightLight
TPI––
Tread typeIntermediateIntermediate
Tubeless readyyesyes
E-MTB approvalnono
Price from€54€54
Model year20252025

Rubber compounds

Hardness scale 1 = hard and fast to 5 = very soft and grippy (our own classification).

Hutchinson Python Race

Grip class: Speed-Grip

Specialized Air Trak

Grip class: Speed-Grip · Balanced

Both tires sit in the same grip class – the watt comparison is fair.

Specialized Air Trak offers the softer compound range – more grip, usually at the cost of wear.

Lab data per version

Hutchinson Python RaceSpecialized Air Trak
Rolling resistance (W)24.5 W
24.5 W
Wet grip measurement (points)59.0 points
69.0 points
Weighed weight (g)592.0 g
596.0 g

Hutchinson Python Race

Specialized Air Trak

Compounds & versions as curves

Up to three versions at once: the curve is modelled rolling resistance across pressure, the dot is the real lab measurement. Click the legend to show or hide a version.

1829.741.35364.7121927344249Pressure (psi)WBicycle Rolling Resistance: 24.5 W at 28 psi (1.93 bar) (measured)Bicycle Rolling Resistance: 24.5 W at 28 psi (1.93 bar) (measured)
  • 27.7 W at 24 psi (1.65 bar) · Reference
    Wet grip (lab)
    59
    Puncture
    –
    Weight
    592 g
  • 27.7 W at 24 psi (1.65 bar) · 0.0 W
    Wet grip (lab)
    69
    Puncture
    –
    Weight
    596 g

The curve shape is a physics model, not a measurement. Labs do not measure grip across pressure – we do not invent that curve. Wet grip is a lab value per tire model, not per version.

Variants head to head

Every measured variant of the selected tires – the same model in another compound, width or casing sits right next to it. Empty fields mean no reliable measurement.

Hutchinson Python RacePython Race Racing Lab 2.424.5 W–592 g
Specialized Air TrakAir Trak Flex Lite T5/T7 2.3524.5 W–596 g

Charts

Rolling resistance (fewer watts is better)

Impact protection (higher is better)

No values are available for this selection.

Editorial rating (higher is better)

TestedYour build – derived

Recommendation by use

  • Wet roots and slippery ground: Specialized Air Trak has the better wet grip.

Tested

  • Rolling resistance: Hutchinson Python Race leads with 24.5 W, Specialized Air Trak trails by 0 W.
  • Wet grip measurement: Specialized Air Trak leads with 69 points, Hutchinson Python Race trails by 10 points.
  • Weighed weight: Hutchinson Python Race leads with 592 g, Specialized Air Trak trails by 4 g.

Tests and sources

Specialized Air Trak

  • The 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.

    MTB-News.de

More head-to-heads