Fat Bike Tire Comparison:
Specialized Fast Trak Fat 2016 vs
Surly Larry 27 TPI 2016

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 27 TPI *
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 27 TPI
Year 20162016
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
Buy At
Manufacturer Part Number
TPI 12027
Compound 60a
Bead FoldingWire
ETRTO 100-559
Size Inch 26"26"
Width Inch 4.003.80
Specified Weight 0 grams1567 grams
Min Air Pressure psi psi
Max Air Pressure 15 psi30 psi
Made In Members OnlyMembers Only
Available Sizes 26x4.00
26x3.80
Image
Specialized Fast Trak Fat 2016
Surly Larry 27 TPI 2016
Image
Specialized Fast Trak Fat 2016
Surly Larry 27 TPI 2016
Image
Specialized Fast Trak Fat 2016
Surly Larry 27 TPI 2016

Size and Weight Measurements


Size and Weight Measurements
Model Fast Trak FatLarry 27 TPI
Specified Weight 0 grams1567 grams
Measured Weight 1189 grams1660 grams
Measured Width Casing 95 mm (un-round)95 mm (un-round)
Measured Width Tread 98 mm92 mm
Measured Height 82 mm (un-round)81 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 mm2.90 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


Rolling Resistance Test Results
Model Fast Trak FatLarry 27 TPI
Spin Up Video YouTubeYouTube
Inner Tube None (60 ml sealant)None (60 ml sealant)
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
28.6 Watts
CRR: 0.00857
38.0 Watts
CRR: 0.01139
Rolling Resistance
8 PSI / 0.6 Bar
35.9 Watts>
CRR: 0.01076
45.5 Watts>
CRR: 0.01364
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 Fast Trak FatLarry 27 TPI
Total Puncture Score Tread 32 Points28 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 1.8 mm2.9 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers Only

Conclusion


Conclusion
Model Fast Trak FatLarry 27 TPI
Full Review Full ReviewFull Review
Verdict RecommendedNot Recommended
Rating 4 / 52 / 5
Buy At
  • Specialized Fast Trak Fat *
  • Surly Larry 27 TPI *
Performance compared to all other fat bike tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 9-point radar charts