Fat Bike Tire Comparison:
Specialized Fast Trak Fat 2016 vs
Surly Larry 2016

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Contents and Test Summary

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Conclusion
  • Specialized Fast Trak Fat
  • Surly Larry
Performance compared to all other fat bike tires
(100% is fastest - lightest - highest - strongest)
Pro Members get 9-point radar charts

Manufacturer Specifications


Manufacturer Specs
Brand SpecializedSurly
Model Fast Trak FatLarry
Year 20162016
Supplied By Bought in store
Sponsored by
Wolf Tooth Components
Bought in store
Sponsored by
Wolf Tooth Components
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
Buy At
Manufacturer Part Number
TPI 120120
Compound 60a
Bead FoldingFolding
ETRTO 100-559
Size Inch 26"26"
Width Inch 4.003.80
Specified Weight 0 grams1256 grams
Min Air Pressure psi psi
Max Air Pressure 15 psi30 psi
Made In Members OnlyMembers Only
Available Sizes 26 x 4.00
26 x 4.70
26 x 3.80
Image
Specialized Fast Trak Fat 2016
Surly Larry 2016
Image
Specialized Fast Trak Fat 2016
Surly Larry 2016
Image
Specialized Fast Trak Fat 2016
Surly Larry 2016

Size and Weight Measurements


Size and Weight Measurements
Model Fast Trak FatLarry
Specified Weight 0 grams1256 grams
Measured Weight 1189 grams1212 grams
Measured Width Casing 95 mm (un-round)93 mm (un-round)
Measured Width Tread 98 mm90 mm
Measured Height 82 mm (un-round)80 mm (un-round)
Measured Knob Height Center 3.2 mm4.5 mm
Measured Knob Height Edge 4.8 mm4.5 mm
Measured Total Thickness Sidewall Members OnlyMembers Only
Measured Carcass Thickness Center 1.80 mm2.50 mm
All size measurements are taken at an air pressure of 16 psi / 1.1 bars on a 65 mm inner width rim.

Rolling Resistance Test Results


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Rolling Resistance Test Results
Model Fast Trak FatLarry
Spin Up Video YouTubeYouTube
Inner Tube Schwalbe SV13J (390 gr)Schwalbe SV13J (390 gr)
Rolling Resistance
20 PSI / 1.4 Bar
Members OnlyMembers Only
Rolling Resistance
16 PSI / 1.1 Bar
Members OnlyMembers Only
Rolling Resistance
12 PSI / 0.8 Bar
34.1 Watts
CRR: 0.01022
37.7 Watts
CRR: 0.01130
Rolling Resistance
8 PSI / 0.6 Bar
43.4 Watts>
CRR: 0.01301
48.4 Watts>
CRR: 0.01451
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 Result (higher is better)
Model Fast Trak FatLarry
Puncture Resistance Tread 8 Points6 Points
Puncture Resistance Side Members OnlyMembers Only

Conclusion


Conclusion
Model Fast Trak FatLarry
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 4 / 53 / 5
Buy At
  • Specialized Fast Trak Fat
  • Surly Larry
Performance compared to all other fat bike tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 9-point radar charts
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