Introducing Grip Testing

Special Article: Introducing Grip Testing

Published: 2021-11-26 | Jarno Bierman


Understanding our static grip test. Read Article

Grand Prix 5000 closeup

Road Bike Special: Continental Grand Prix 5000 Endurance Test

Update: 2021-11-19 | Published: 2019-07-12 | Jarno Bierman


Endurance test of a pair of Grand Prix 5000 with measurements every 620 miles / 1000 km. Read Article

Vittoria Air-Liner Road Test

Special Article: Vittoria Air-Liner Road Test

Published: 2021-11-05 | Jarno Bierman


Rolling resistance of the Vittoria Air-Liner Road tire insert Read Article

Panaracer GravelKing Comparison

Pro Members - Special Article: Panaracer GravelKing TLC Comparison

Published: 2021-10-22 | Jarno Bierman


Panaracer GravelKing TLC 32, 35, and 40 mm compared. Read Article

TPU Inner Tubes Test

Special Article: TPU Inner Tubes Test

Published: 2021-09-24 | Jarno Bierman


Tubolito, Revoloop, Wolfpack, Aerothan, FOSS, compared to butyl, light butyl, and latex inner tubes. Read Article

Rim Width Test

Special Article: The Rim Width Test

Published: 2021-02-12 | Jarno Bierman


Road bike, CX/gravel, and MTB tires on 18, 22, and 26 mm rims. Read Article

Tubolito Inner Tubes

Special Article: Tubolito Rolling Resistance Tests

Published: 2020-05-01 | Jarno Bierman


We tested the Tubolito tubes against a selection of other tubes. Read Article

Wall of tires

Road Bike Special: The Best Road Bike Tires

Published: 2020-04-17 | Jarno Bierman


A simple overview of our most recommended road bike tires. Read Article

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Continental Grand Prix 5000 23, 25, 28, 32 mm

Road Bike Special: Continental Grand Prix 5000 Comparison

Published: 2019-02-19 | Jarno Bierman


Comparison between a 23, 25, 28, and 32 mm Continental Grand Prix 5000. Read Article

New vs Worn Grand Prix 4000S II

Road Bike Special: Worn vs New Grand Prix 4000S II

Published: 2018-6-12 | Jarno Bierman


Comparison between a new and a worn Continental Grand Prix 4000S II. Read Article

Fat Bike Tubeless Vs Inner Tubes

Fat Bike Special: Tubeless vs Inner Tubes Comparison

Published: 2015-10-31 | Jarno Bierman


Rolling resistance comparison of tubeless and tubed fat bike tires. Read Article

Schwalbe Marathon 32, 37, 40, 47 Compared

Tour/E-Bike Special: Schwalbe Marathon 32, 37, 40, 47 Compared

Published: 2015-12-04 | Jarno Bierman


Rolling resistance comparison between a 32, 37, 40 and 47 mm Schwalbe Marathon. Read Article

Continental Grand Prix 4000S II 23, 25, 28 mm Comparison

Road Bike Special: Continental GP4000S II Comparison - 23, 25, 28 mm Compared

Published: 2015-02-26 | Jarno Bierman


Rolling resistance comparison between a 23, 25 and 28 mm GP4000S II. Read Article

Rolling Resistance comparison between Latex, Light and Standard Road bike inner tubes

Road Bike Special: Tubeless Vs Latex, Light, and Standard Inner Tubes

Published: 2014-11-24 | Jarno Bierman


The complete guide: Tubeless vs light tubes vs latex tubes vs standard tubes. Read Article

Tubeless sealant, latex tube and a butyl tube on a rolling resistance test machine

MTB Special: Tubeless vs Latex Tube vs Butyl Tube. A Rolling Resistance Comparison

Published: 2014-07-25 | Jarno Bierman


All you need to know about the rolling resistance of inner tubes and tubeless setups. Read Article

Tubeless sealant in road bike tires

Road Bike Special: The Effect of Tubeless Sealant on Rolling Resistance

Published: 2014-10-15 | Jarno Bierman


How much does adding tubeless sealant to road bike tires influence rolling resistance? Read Article

Rolling resistance of a Panaracer R'Air road bike inner tube vs other inner tubes

Road Bike Special: Panaracer R'Air Inner Tube

Published: 2015-01-02 | Jarno Bierman


Rolling resistance of a Panaracer R'Air inner tube and other inner tubes. Read Article