CX/Gravel Tire Comparison:
Continental Terra Speed TR E-25 40 2024 vs
Panaracer GravelKing SS TLC 40 2021 vs
Tufo Gravel Thundero 40 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
  • Continental Terra Speed TR E-25 40
  • Panaracer GravelKing SS TLC 40
  • Tufo Gravel Thundero 40
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specifications
Brand ContinentalPanaracerTufo
Model Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Year 202420212022
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 HighHighHigh
Buy At Ad Amazon.comAd Amazon.com
Manufacturer Part Number 0101694RF738-GK-SMS-B-
EAN 40192380270998592723054894
TPI 3/180-210/375
Compound Black ChiliZSG-
Bead FoldingFoldingFolding
ETRTO 40-62240-62240-622
Specified Weight 465 grams410 grams430 grams
Min Air Pressure psi psi30 psi
Max Air Pressure 73 psi75 psi70 psi
Made In Members OnlyMembers OnlyMembers Only
Available Sizes 35-622 (700x35c)
40-622 (700x40c)
45-622 (700x45c)
35-584 (650x35b)
40-584 (650x40b)
32-622 (700x32c)
35-622 (700x35c)
40-622 (700x38c)
43-622 (700x43c)
48-584 (650x48b)
36-622 (700x36c)
40-622 (700x40c)
44-622 (700x44c)
Image 1
Continental Terra Speed TR E-25 40 2024
Panaracer GravelKing SS TLC 40 2021
Tufo Gravel Thundero 40 2022
Image 2
Continental Terra Speed TR E-25 40 2024
Panaracer GravelKing SS TLC 40 2021
Tufo Gravel Thundero 40 2022
Image 3
Continental Terra Speed TR E-25 40 2024
Panaracer GravelKing SS TLC 40 2021
Tufo Gravel Thundero 40 2022
Image 4
Continental Terra Speed TR E-25 40 2024
Not Available
Tufo Gravel Thundero 40 2022

Size and Weight Measurements


Size and Weight Measurements
Model Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Specified Weight 465 grams410 grams430 grams
Measured Weight 473 grams405 grams460 grams
Measured Width Casing 38 mm (un-round)36 mm (un-round)38 mm (un-round)
Measured Width Tread 39 mm36 mm40 mm
Measured Height 35 mm (un-round)33 mm (un-round)35 mm (un-round)
Measured Knob Height Center 1.1 mm0.2 mm1.5 mm
Measured Knob Height Edge 1.3 mm1.7 mm2.1 mm
Measured Casing Thickness Center 2.60 mm2.80 mm1.80 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 Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Spin Up Video YouTubeYouTubeYouTube
Inner Tube None (30 ml sealant)None (30 ml sealant)None (30 ml sealant)
Measured Width 38 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 bar
High 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 bar
Medium 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 bar
Low Air Pressure
19.6 Watts
CRR: 0.00588
(36 psi / 2.6 bar)
19.2 Watts
CRR: 0.00576
(36 psi / 2.6 bar)
17.4 Watts
CRR: 0.00522
(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
22.4 Watts
CRR: 0.00671
(27 psi / 1.9 bar)
22.5 Watts
CRR: 0.00674
(27 psi / 1.9 bar)
20.0 Watts
CRR: 0.00600
(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 Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Total Puncture Score Tread 46 Points45 Points33 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 2.6 mm2.8 mm1.8 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 Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Wet Grip Average 65 Points64 Points72 Points
Wet Grip Center Members OnlyMembers OnlyMembers Only
Wet Grip Edge Members OnlyMembers OnlyMembers Only
Measured Knob Height Center 1.1 mm0.2 mm1.5 mm
Measured Knob Height Edge 1.3 mm1.7 mm2.1 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 Terra Speed TR E-25 40GravelKing SS TLC 40Gravel Thundero 40
Full Review Full ReviewFull ReviewFull Review
Verdict Highly RecommendedHighly RecommendedHighly Recommended
Rating 4.5 / 54.3 / 55.0 / 5
Buy At Ad Amazon.comAd Amazon.com
  • Continental Terra Speed TR E-25 40
  • Panaracer GravelKing SS TLC 40
  • Tufo Gravel Thundero 40
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts