Image: manufacturer · Source

Schwalbe

Thunder Burt

Name: Schwalbe Thunder Burt
Brand: Schwalbe

Front+Rear

Semi-Slick

Tubeless ready

Tested

Strong in comparison

17.3 W · rank 2 of 20 comparable XC tires

0.6 W behind the best value in the same test series. Fewer watts is better – every watt saved stays in the drivetrain.

Extrem schneller Semi-Slick für trockene, feste XC-Kurse.

Weight: 701 g
Variant: –
Compound: ADDIX Speed
Grip class: Speed · Speed-Grip
Casing: Super Race
TPI: –
Reinforcement: –
Wheel sizes: 29", 27.5"
Widths: 2.35"
Front pressure: 20–26 psi (1.38–1.79 bar)
Rear pressure: 22–28 psi (1.52–1.93 bar)
Price (MSRP): 69–85 €
Model year: 2026

Calculate pressure for this tire View lab test

Configure your build

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

Tire width

29" wheel

Casing

Pressure (context)

24 psi (1.65 bar)

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.

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.

Rating profile

3 of 8 criteria rated

Editorial assessment on a 1–10 scale. Grip index: 6.9

Change build

TestedYour build – derived

These grades describe the tire model, not one specific width or compound – no reliable per-version grades exist.

Individual scores

Rolling resistance8.3/10
Wet grip6.9/10
Puncture protection3.7/10

No data

Dry grip
Cornering grip
Braking traction
Durability
Comfort/damping

Scores from 1 to 10: higher is better.

Differences between builds

2.25" · Super Ground · ADDIX Speed → 2.1" · Super Ground · ADDIX Speed Rolling resistance +2.9 W · Weight -67 g
2.35" · Super Race · ADDIX Speed → 2.1" · Super Race · ADDIX Speed Rolling resistance +0.8 W · Weight -90 g
2.1" · Super Race · ADDIX Speed → 2.1" · Super Ground · ADDIX Speed Rolling resistance +0.5 W · Weight +2 g

Sizes & variants

Every variant the manufacturer lists, with its own claimed data. Missing values stay blank.

5 variants


29"	2.1" · 54 mm	Super Race(Light)	ADDIX Speed	545 g
29"	2.1" · 54 mm	Super Ground(Trail)	ADDIX Speed	550 g	E-25
29"	2.25" · 57 mm	Super Ground(Trail)	ADDIX Speed	615 g	E-25
29"	2.25" · 57 mm	Super Race(Light)	ADDIX Speed	645 g
29"	2.35" · 60 mm	Super Race(Light)	ADDIX Speed	710 g

The value in brackets is our brand-neutral casing class (Light, Trail, Enduro, Downhill) – not a manufacturer statement.

Source: manufacturer data

Measured values

Lab data

Real test-rig values – not an estimate. Tested variant: Thunder Burt Super Race Addix Speed 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.

Rolling resistancemeasured at 28 psi (1.93 bar): 17.3 W
Impact protection tread: 31 points
Wet grip measurementHard surface, not off-road: 67 points
Tread rubber thickness: 2.1 mm
Weighed weight: 701 g
Measured widthon a 17.8 mm rim: 54 mm

Source: Bicycle Rolling Resistance · January 2026To the test

All tested versions

Test series: Bicycle Rolling Resistance – MTB-Messreihe

Measured values per compound and casing from the same laboratory test. Empty cells mean no reliable value was published.


Thunder Burt Super Ground Addix Speed 2.1	29 x 2.10	18.6 W	59	24	–	50 mm	613 g	–
Thunder Burt Super Ground Addix Speed 2.25	29 x 2.25	15.7 W	56	26	–	53 mm	680 g	–
Thunder Burt Super Race Addix Speed 2.1	29 x 2.10	18.1 W	61	27	–	50 mm	611 g	–
Thunder Burt Super Race Addix Speed 2.35	29 x 2.35	17.3 W	67	31	–	54 mm	701 g	–

Wet grip is measured in the lab on a hard wet surface – it is not off-road grip.

Rolling resistance

lower is better

Thunder Burt Super Ground Addix Speed 2.2515.7 W
Thunder Burt Super Race Addix Speed 2.3517.3 W
Thunder Burt Super Race Addix Speed 2.118.1 W
Thunder Burt Super Ground Addix Speed 2.118.6 W

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.

Choose pressure: 24 psi (1.65 bar)

17.8 W at 24 psi (1.65 bar) · Reference
Wet grip (lab)
67
Puncture
–
Weight
680 g
19.6 W at 24 psi (1.65 bar) · +1.8 W
Wet grip (lab)
67
Puncture
–
Weight
701 g
20.5 W at 24 psi (1.65 bar) · +2.7 W
Wet grip (lab)
67
Puncture
–
Weight
611 g
18.6 W
Wet grip (lab)
67
Puncture
–
Weight
613 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.

Three curves at most – hide one first.

Addix Speed

Hardness steps are our classification based on manufacturer information. All numbers come from lab tests; sources are linked on the tire pages. All information without warranty.

Automatic assessment

Tested: Calculated from the stored measurements – compared only within the same test series and category (XC).

Rolling resistance
Strong in comparison
17.3 W · rank 2 of 20 comparable XC tires
0.6 W behind the best value in the same test series. Fewer watts is better – every watt saved stays in the drivetrain.
Wet grip measurement
Mid-field
67 points · rank 9 of 20 comparable XC tires
5 points behind the best value in the same test series. More points means more compound grip on smooth surfaces.
Weighed weight
Mid-field
701 g · rank 10 of 20 comparable XC tires
109 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.