CX/Gravel Tire Comparison:
Bontrager GR1 Team Issue 40 2023 vs
Panaracer GravelKing SS Plus TLC 40 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
  • Bontrager GR1 Team Issue 40
  • Panaracer GravelKing SS Plus TLC 40
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specifications
Brand BontragerPanaracer
Model GR1 Team Issue 40GravelKing SS Plus TLC 40
Year 20232021
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 571129RF738-GK-SMS-P-D
EAN
TPI 120-
Compound 60a/52aZSG
Bead FoldingFolding
ETRTO 40-62240-622
Specified Weight 430 grams460 grams
Min Air Pressure psi psi
Max Air Pressure 50 psi75 psi
Made In Members OnlyMembers Only
Available Sizes 35-622 (700x35c)
40-622 (700x40c)
32-622 (700x32c)
35-622 (700x35c)
40-622 (700x38c)
43-622 (700x43c)
48-584 (650x48b)
Image 1
Bontrager GR1 Team Issue 40 2023
Panaracer GravelKing SS Plus TLC 40 2021
Image 2
Bontrager GR1 Team Issue 40 2023
Panaracer GravelKing SS Plus TLC 40 2021
Image 3
Bontrager GR1 Team Issue 40 2023
Panaracer GravelKing SS Plus TLC 40 2021
Image 4
Bontrager GR1 Team Issue 40 2023
Not Available

Size and Weight Measurements


Size and Weight Measurements
Model GR1 Team Issue 40GravelKing SS Plus TLC 40
Specified Weight 430 grams460 grams
Measured Weight 437 grams474 grams
Measured Width Casing 39 mm (un-round)36 mm (un-round)
Measured Width Tread 39 mm36 mm
Measured Height 37 mm (un-round)43 mm (un-round)
Measured Knob Height Center 1.2 mm0.2 mm
Measured Knob Height Edge 1.2 mm1.5 mm
Measured Casing Thickness Center 1.60 mm3.40 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 GR1 Team Issue 40GravelKing SS Plus TLC 40
Spin Up Video YouTubeYouTube
Inner Tube None (30 ml sealant)None (30 ml sealant)
Measured Width 39 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
30.4 Watts
CRR: 0.00911
(33 psi / 2.3 bar)
25.5 Watts
CRR: 0.00764
(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
36.2 Watts
CRR: 0.01085
(25 psi / 1.7 bar)
30.0 Watts
CRR: 0.00899
(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 GR1 Team Issue 40GravelKing SS Plus TLC 40
Total Puncture Score Tread 24 Points70 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 1.6 mm3.4 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 GR1 Team Issue 40GravelKing SS Plus TLC 40
Wet Grip Average 73 Points64 Points
Wet Grip Center Members OnlyMembers Only
Wet Grip Edge Members OnlyMembers Only
Measured Knob Height Center 1.2 mm0.2 mm
Measured Knob Height Edge 1.2 mm1.5 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 GR1 Team Issue 40GravelKing SS Plus TLC 40
Full Review Full ReviewFull Review
Verdict Not RecommendedRecommended
Rating 2.0 / 53.3 / 5
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  • Bontrager GR1 Team Issue 40
  • Panaracer GravelKing SS Plus TLC 40
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts