CX/Gravel Tire Comparison:
Specialized Pathfinder Pro 2Bliss Ready 38 2022 vs
WTB Riddler TCS Light 37 2020

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
  • Specialized Pathfinder Pro 2Bliss Ready 38
  • WTB Riddler TCS Light 37
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specifications
Brand SpecializedWTB
Model Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Year 20222020
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 -W010-0694
EAN
TPI 12060
Compound GriptonDual DNA
Bead FoldingFolding
ETRTO 38-62237-622
Specified Weight 480 grams465 grams
Min Air Pressure 50 psi30 psi
Max Air Pressure 80 psi55 psi
Made In Members OnlyMembers Only
Available Sizes 38-622 (700x38c)
42-622 (700x42c)
47-584 (650x47b)
37-622 (700x37c)
44-622 (700x45c)
Image 1
Specialized Pathfinder Pro 2Bliss Ready 38 2022
WTB Riddler TCS Light 37 2020
Image 2
Specialized Pathfinder Pro 2Bliss Ready 38 2022
WTB Riddler TCS Light 37 2020
Image 3
Specialized Pathfinder Pro 2Bliss Ready 38 2022
WTB Riddler TCS Light 37 2020
Image 4
Specialized Pathfinder Pro 2Bliss Ready 38 2022
Not Available

Size and Weight Measurements


Size and Weight Measurements
Model Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Specified Weight 480 grams465 grams
Measured Weight 480 grams446 grams
Measured Width Casing 36 mm (un-round)35 mm (un-round)
Measured Width Tread 37 mm36 mm
Measured Height 35 mm (un-round)33 mm (un-round)
Measured Knob Height Center 0.0 mm1.2 mm
Measured Knob Height Edge 2.3 mm2.8 mm
Measured Casing Thickness Center 2.30 mm2.10 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 Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Spin Up Video YouTubeYouTube
Inner Tube None (30 ml sealant)None (30 ml sealant)
Measured Width 36 mm35 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
23.0 Watts
CRR: 0.00689
(36 psi / 2.6 bar)
22.8 Watts
CRR: 0.00683
(40 psi / 2.8 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
26.7 Watts
CRR: 0.00800
(27 psi / 1.9 bar)
26.2 Watts
CRR: 0.00785
(30 psi / 2.1 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 Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Total Puncture Score Tread 46 Points24 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 2.3 mm2.1 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 Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Wet Grip Average 75 Points64 Points
Wet Grip Center Members OnlyMembers Only
Wet Grip Edge Members OnlyMembers Only
Measured Knob Height Center 0.0 mm1.2 mm
Measured Knob Height Edge 2.3 mm2.8 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 Pathfinder Pro 2Bliss Ready 38Riddler TCS Light 37
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 3.7 / 53.0 / 5
Buy At Ad Amazon.com
  • Specialized Pathfinder Pro 2Bliss Ready 38
  • WTB Riddler TCS Light 37
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts