NEW - Continental Grand Prix 5000 S TR (tanwall) 25 Review
Published: 2022-08-12 | Jarno Bierman

Transparent sidewalls add rolling resistance.
Zipp G40 XPLR 40 Review
Published: 2022-08-05 | Jarno Bierman
40 mm hookless compatible gravel bike tire.
Challenge Strada Bianca Race TLR 36 Review
Published: 2022-07-29 | Jarno Bierman
Strada Bianca Race TLR Vs Strada Bianca Pro HTLR.
CRR at Different Temperatures
Published: 2022-07-15 | Jarno Bierman
Examining temperature dependence of rolling resistance.
Vittoria Terreno Dry TLR G+ 2.0 40 Review
Published: 2022-07-08 | Jarno Bierman
Comparing Tubeless TLR and TNT versions.
Teravail Cannonball Light & Supple 42 Review
Published: 2022-06-30 | Jarno Bierman
Our first Teravail tire test.
Tufo Gravel Speedero 40 Review
Published: 2022-06-24 | Jarno Bierman
Gravel Speedero or Gravel Thundero?
CX/Gravel Inner Tubes Vs Tubeless
Published: 2022-06-16 | Jarno Bierman
Eight gravel bike tires with inner tubes and tubeless.
Rene Herse Snoqualmie Pass TC Extralight 44 Review
Published: 2022-05-27 | Jarno Bierman
Snoqualmie Pass with extralight casing.
Rene Herse Snoqualmie Pass TC 44 Review
Published: 2022-05-27 | Jarno Bierman
The standard edition of the Snoqualmie Pass.
Rene Herse Snoqualmie Pass TC Endurance 44 Review
Published: 2022-05-27 | Jarno Bierman
Snoqualmie Pass with more protection.
Rene Herse Snoqualmie Pass TC Endurance Plus 44 Review
Published: 2022-05-27 | Jarno Bierman
Snoqualmie with even more protection.
Schwalbe Pro One TLE Addix 34 Review
Published: 2022-05-20 | Jarno Bierman
Pro One TLE 34 tested as a CX/Gravel bike tire.
Continental Speed King CX RaceSport 32 Review
Published: 2022-05-13 | Jarno Bierman
Not as speedy as expected.
Continental Grand Prix 5000 S TR Hooked Vs Hookless Rims
Published: 2022-05-06 | Jarno Bierman
Grand Prix 5000 S TR 28, 30, and 32 mm on hooked and hookless rims.
CRR at Different Loads
Published: 2022-04-22 | Jarno Bierman
Examining load dependence of rolling resistance.
Specialized Pathfinder S-Works 2Bliss Ready 42 Review
Published: 2022-04-15 | Jarno Bierman
Tons of grip.
Continental Grand Prix 4 Season 2022 25 Review
Published: 2022-04-08 | Jarno Bierman
Faster rolling but less puncture resistant.
Continental Grand Prix 5000 S TR Tubeless Vs Tubes
Published: 2022-03-25 | Jarno Bierman
Grand Prix 5000 S TR tubeless and with latex, butyl, and TPU inner tubes.
Pirelli Cinturato Velo 35 Review
Published: 2022-03-18 | Jarno Bierman
Pirelli Cinturato Velo 35 mm as a CX/Gravel tire.
Continental Grand Prix 5000 S TR Comparison
Published: 2022-03-11 | Jarno Bierman
Full comparison of the 25, 28, 30, and 32 mm versions of the Grand Prix 5000 S TR.
Top 3 Fastest Tubeless Vs Latex (and Butyl)
Published: 2022-02-25 | Jarno Bierman
Top 3 fastest tubeless road bike tires: tubeless, with a latex tube, and with a butyl tube.
Pirelli Cinturato Gravel M 40 Review
Published: 2022-02-11 | Jarno Bierman
Gravel M for a wide range of conditions.
Panaracer GravelKing TLC 32 Review
Published: 2022-02-11 | Jarno Bierman
Better than expected protection.
Panaracer GravelKing TLC 35 Review
Published: 2022-02-11 | Jarno Bierman
Very similar to the 40 mm version of the GravelKing.
Challenge Strada Pro HTLR 25 Review
Published: 2022-02-04 | Jarno Bierman
HTLR version of the Strada Pro.
Pro Members - Rene Herse Casing Comparison
Published: 2022-01-27 | Jarno Bierman
Snoqualmie Pass Extra Light, Standard, Endurance, and Endurance Plus Compared.
Specialized S-Works Fast Trak 2BR T5/T7 2.35 Review
Published: 2022-01-21 | Jarno Bierman
Dual compound S-Works Fast Trak.
Continental Grand Prix 5000 S TR 32 Review
Published: 2022-01-14 | Jarno Bierman
Grand Prix 5000 S TR as a CX-Gravel tire.
CRR at Different Speeds
Published: 2022-01-07 | Jarno Bierman
Examining speed dependence of rolling resistance.
Specialized Roubaix Pro 2Bliss Ready 32 Review
Published: 2021-12-23 | Jarno Bierman
Endurant and the Gripton compound.
Panaracer GravelKing SS Plus TLC 40 Review
Published: 2021-12-16 | Jarno Bierman
Gravelking Plus, or Plus Plus?
Continental Grand Prix 5000 TL 32 Review
Published: 2021-11-19 | Jarno Bierman
Grand Prix 5000 TL as a CX-Gravel tire.
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.
Schwalbe Thunder Burt Super Ground Addix Speed 2.25 Review
Published: 2021-11-12 | Jarno Bierman
It's all about how you mix it right.