CX/Gravel Tire Comparison:
Panaracer GravelKing Slick R 40 2024 vs
Panaracer GravelKing SS TLC 40 2021 vs
Rene Herse Barlow Pass TC 38 2021

Contents and Test Summary

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Static Grip Test Results
  6. Conclusion
  • Panaracer GravelKing Slick R 40
  • Panaracer GravelKing SS TLC 40
  • Rene Herse Barlow Pass TC 38
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts

Manufacturer Specifications


Manufacturer Specifications
Brand PanaracerPanaracerRene Herse
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Year 202420212021
Supplied By Bought in storeBought in storeBought in store
Full Review Full ReviewFull ReviewFull Review
New or Used NewNewNew
Mileage 0 km0 km0 km
Price Range HighHighVery High
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Manufacturer Part Number RF740-GK-R-SX2RF738-GK-SMS-BRF738TC-LX-CP
EAN
TPI ---
Compound ZSG GravelZSG
Bead FoldingFoldingFolding
ETRTO 40-62240-62238-622
Specified Weight 0 grams410 grams385 grams
Min Air Pressure psi psi psi
Max Air Pressure 60 psi75 psi75 psi
Made In Members OnlyMembers OnlyMembers Only
Available Sizes 28-622 (700x28c)
30-622 (700x30c)
35-622 (700x35c)
40-622 (700x40c)		32-622 (700x32c)
35-622 (700x35c)
40-622 (700x38c)
43-622 (700x43c)
48-584 (650x48b)		38-622 (700x38c)
Image 1
Panaracer GravelKing Slick R 40 2024
Panaracer GravelKing SS TLC 40 2021
Rene Herse Barlow Pass TC 38 2021
Image 2
Panaracer GravelKing Slick R 40 2024
Panaracer GravelKing SS TLC 40 2021
Rene Herse Barlow Pass TC 38 2021
Image 3
Panaracer GravelKing Slick R 40 2024
Panaracer GravelKing SS TLC 40 2021
Rene Herse Barlow Pass TC 38 2021
Image 4
Panaracer GravelKing Slick R 40 2024
Not AvailableNot Available

Size and Weight Measurements


Size and Weight Measurements
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Specified Weight 0 grams410 grams385 grams
Measured Weight 369 grams405 grams379 grams
Measured Width Casing 39 mm (un-round)36 mm (un-round)38 mm (un-round)
Measured Width Tread 38 mm36 mm37 mm
Measured Height 36 mm (un-round)33 mm (un-round)36 mm (un-round)
Measured Knob Height Center 0.2 mm0.2 mm0.2 mm
Measured Knob Height Edge 0.2 mm1.7 mm0.1 mm
Measured Casing Thickness Center 2.40 mm2.80 mm2.70 mm
Measured Total Thickness Sidewall Members OnlyMembers OnlyMembers Only
All size measurements are taken at low air pressure on a 17.8 mm inner width rim.

Rolling Resistance Test Results


Rolling Resistance Test Results
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Spin Up Video YouTubeYouTubeYouTube
Inner Tube None (30 ml sealant)None (30 ml sealant)None (30 ml sealant)
Measured Width 39 mm36 mm38 mm
Rolling Resistance
Real tire width in mm:
30-32 = 66 psi/4.6 bar
33-35 = 60 psi/4.1 bar
36-38 = 54 psi/3.7 bar
39-42 = 50 psi/3.4 bar
43-46 = 46 psi/3.2 bar
47-50 = 42 psi/2.9 barHigh Air Pressure		 Members OnlyMembers OnlyMembers Only
Rolling Resistance
Real tire width in mm:
30-32 = 55 psi/3.8 bar
33-35 = 50 psi/3.4 bar
36-38 = 45 psi/3.1 bar
39-42 = 42 psi/2.9 bar
43-46 = 38 psi/2.6 bar
47-50 = 35 psi/2.4 barMedium Air Pressure		 Members OnlyMembers OnlyMembers Only
Rolling Resistance
Real tire width in mm:
30-32 = 44 psi/3.0 bar
33-35 = 40 psi/2.8 bar
36-38 = 36 psi/2.6 bar
39-42 = 33 psi/2.3 bar
43-46 = 31 psi/2.1 bar
47-50 = 28 psi/1.9 barLow Air Pressure		 18.9 Watts
CRR: 0.00567
(33 psi / 2.3 bar)		19.2 Watts
CRR: 0.00576
(36 psi / 2.6 bar)		20.4 Watts
CRR: 0.00612
(36 psi / 2.6 bar)
Rolling Resistance
Real tire width in mm:
30-32 = 33 psi/2.3 bar
33-35 = 30 psi/2.1 bar
36-38 = 27 psi/1.9 bar
39-42 = 25 psi/1.7 bar
43-46 = 23 psi/1.6 bar
47-50 = 21 psi/1.4 barExtra Low Air Pressure		 21.2 Watts
CRR: 0.00635
(25 psi / 1.7 bar)		22.5 Watts
CRR: 0.00674
(27 psi / 1.9 bar)		23.6 Watts
CRR: 0.00707
(27 psi / 1.9 bar)
The CX/Gravel section is a multi tire size section, air pressures have been adjusted to the measured casing width.

All numbers are for a single tire at a speed of 29 km/h / 18 mph and a load of 42.5 kg / 94 lbs.

Use the formula: RR (Watts) = CRR * speed (m/s) * load (N) to calculate rolling resistance at a given speed and load.

Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Total Puncture Score Tread 40 Points45 Points31 Points
Total Puncture Score Sidewall Members OnlyMembers OnlyMembers Only
Tread Puncture Force Sharp Needle Members OnlyMembers OnlyMembers Only
Tread Puncture Force Blunt Needle Members OnlyMembers OnlyMembers Only
Tread Total Tire Thickness 2.4 mm2.8 mm2.7 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers OnlyMembers Only

Static Grip Test Results


Static Grip Test Results (higher is better)
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Wet Grip Average 60 Points64 Points63 Points
Wet Grip Center Members OnlyMembers OnlyMembers Only
Wet Grip Edge Members OnlyMembers OnlyMembers Only
Measured Knob Height Center 0.2 mm0.2 mm0.2 mm
Measured Knob Height Edge 0.2 mm1.7 mm0.1 mm
Grip in points = coefficient of friction * 100
CX/Gravel grip test rim width = 23.0 mm
Wet Grip Test and Off-Road Tires (info)

Conclusion


Conclusion
Model GravelKing Slick R 40GravelKing SS TLC 40Barlow Pass TC 38
Full Review Full ReviewFull ReviewFull Review
Verdict RecommendedHighly RecommendedRecommended
Rating 3.5 / 54.3 / 53.5 / 5
Buy At Ad Amazon.com
  • Panaracer GravelKing Slick R 40
  • Panaracer GravelKing SS TLC 40
  • Rene Herse Barlow Pass TC 38
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)
Pro Members get 11-point radar charts