CX/Gravel Tire Comparison:
Panaracer GravelKing SS Plus TLC 40 2021 vs
Specialized Pathfinder Pro 2Bliss Ready 38 2022

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 SS Plus TLC 40
  • Specialized Pathfinder Pro 2Bliss Ready 38
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specifications
Brand PanaracerSpecialized
Model GravelKing SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Year 20212022
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
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Manufacturer Part Number RF738-GK-SMS-P-D-
EAN
TPI -120
Compound ZSGGripton
Bead FoldingFolding
ETRTO 40-62238-622
Specified Weight 460 grams480 grams
Min Air Pressure psi50 psi
Max Air Pressure 75 psi80 psi
Made In Members OnlyMembers Only
Available Sizes 32-622 (700x32c)
35-622 (700x35c)
40-622 (700x38c)
43-622 (700x43c)
48-584 (650x48b)
38-622 (700x38c)
42-622 (700x42c)
47-584 (650x47b)
Image 1
Panaracer GravelKing SS Plus TLC 40 2021
Specialized Pathfinder Pro 2Bliss Ready 38 2022
Image 2
Panaracer GravelKing SS Plus TLC 40 2021
Specialized Pathfinder Pro 2Bliss Ready 38 2022
Image 3
Panaracer GravelKing SS Plus TLC 40 2021
Specialized Pathfinder Pro 2Bliss Ready 38 2022
Image 4 Not Available
Specialized Pathfinder Pro 2Bliss Ready 38 2022

Size and Weight Measurements


Size and Weight Measurements
Model GravelKing SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Specified Weight 460 grams480 grams
Measured Weight 474 grams480 grams
Measured Width Casing 36 mm (un-round)36 mm (un-round)
Measured Width Tread 36 mm37 mm
Measured Height 43 mm (un-round)35 mm (un-round)
Measured Knob Height Center 0.2 mm0.0 mm
Measured Knob Height Edge 1.5 mm2.3 mm
Measured Casing Thickness Center 3.40 mm2.30 mm
Measured Total Thickness Sidewall Members 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 SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Spin Up Video YouTubeYouTube
Inner Tube None (30 ml sealant)None (30 ml sealant)
Measured Width 36 mm36 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 bar
High Air Pressure
Members 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 bar
Medium Air Pressure
Members 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 bar
Low Air Pressure
25.5 Watts
CRR: 0.00764
(36 psi / 2.6 bar)
23.0 Watts
CRR: 0.00689
(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 bar
Extra Low Air Pressure
30.0 Watts
CRR: 0.00899
(27 psi / 1.9 bar)
26.7 Watts
CRR: 0.00800
(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 SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Total Puncture Score Tread 70 Points46 Points
Total Puncture Score Sidewall Members OnlyMembers Only
Tread Puncture Force Sharp Needle Members OnlyMembers Only
Tread Puncture Force Blunt Needle Members OnlyMembers Only
Tread Total Tire Thickness 3.4 mm2.3 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers Only

Static Grip Test Results


Static Grip Test Results (higher is better)
Model GravelKing SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Wet Grip Average 64 Points75 Points
Wet Grip Center Members OnlyMembers Only
Wet Grip Edge Members OnlyMembers Only
Measured Knob Height Center 0.2 mm0.0 mm
Measured Knob Height Edge 1.5 mm2.3 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 SS Plus TLC 40Pathfinder Pro 2Bliss Ready 38
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 3.3 / 53.7 / 5
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  • Panaracer GravelKing SS Plus TLC 40
  • Specialized Pathfinder Pro 2Bliss Ready 38
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts