Road Bike Tire Test: Specialized Cotton TLR 28

Manufacturer Specifications

Manufacturer Specifications
Brand	Specialized
Model	Cotton TLR
Year	2026
Tire Type	Tubeless
Supplied By	Bought in store
New or Used	New
Mileage	0 km
Price Range	Very High
Buy At
Manufacturer part number	00026-1800
EAN	196625232237
TPI	320
Compound	Gripton T2/T5
Bead	Folding
ETRTO	28-622
Size Inch	28"
Specified Width (mm)	28
Specified Weight	280 grams
Max Air Pressure (psi)	95
Made In	Pro Data
Available Sizes	28-622 (700x28c) 30-622 (700x30c) 32-622 (700x32c)

Specialized Cotton TLR 28 Test Results

Size, Weight, and Thickness Measurements

Size, Weight and Thickness Measurements
Specified Weight	280 grams
Measured Weight	262 grams
System Adjusted Weight (tire + valve + rim seal)	282 grams
Measured Width	27 mm (un-round)
Measured Height	Pro Data
Tire Circumference	Pro Data
Total Tire Thickness Center	2.2 mm
Total Tire Thickness Sidewall	Pro Data
Unmounted Casing Width	70 mm
Unmounted Tread Width	Pro Data
Tread Cover (Tread / Casing Ratio)	Pro Data
All size measurements are taken at an air pressure of 100 psi / 6.9 bars on a 18 mm inner width (unless otherwise stated) rim.

Rolling Resistance Test Results

Rolling Resistance Test Results
Inner Tube	None (20 ml sealant)
Measured Width	27 mm (un-round)
Rolling Resistance Real tire width in mm: 22-24 = 132 psi/9.1 bar 25-27 = 120 psi/8.3 bar 28-30 = 108 psi/7.4 bar 31-32 = 100 psi/6.9 barUltra High Air Pressure (120 psi / 8.3 bar)	Pro Data
Rolling Resistance Real tire width in mm: 22-24 = 110 psi/7.6bar 25-27 = 100 psi/6.9 bar 28-30 = 90 psi/6.2 bar 31-32 = 83 psi/5.7 barExtra High Air Pressure (100 psi / 6.9 bar)	Pro Data
Rolling Resistance Real tire width in mm: 22-24 = 88 psi/6.1 bar 25-27 = 80 psi/5.5 bar 28-30 = 72 psi/5.0 bar 31-32 = 67 psi/4.6 barHigh Air Pressure (80 psi / 5.5 bar)	9.3 Watts CRR: 0.00279
Rolling Resistance Real tire width in mm: 22-24 = 66 psi/4.6 bar 25-27 = 54 psi/4.1 bar 28-30 = 60 psi/3.7 bar 31-32 = 50 psi/3.4 barMedium Air Pressure (60 psi / 4.1 bar)	Pro Data
The Road Bike 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)
Total Puncture Score Tread	49 Points
Total Puncture Score Sidewall	Pro Data
Tread Puncture Force Sharp Needle	Pro Data
Tread Puncture Force Blunt Needle	Pro Data
Tread Total Tire Thickness	2.2 mm
Sidewall Puncture Force Sharp Needle	Pro Data
Sidewall Puncture Force Blunt Needle	Pro Data
Sidewall Total Tire Thickness	Pro Data

Static Grip Test Results

Static Grip Test Results
Wet Grip Average	81 Points
Wet Grip Center	Pro Data
Wet Grip Edge	Pro Data
Grip in points = coefficient of friction * 100 Road bike grip test rim width = 19.0 mm (unless otherwise stated)

Conclusion

RATING: 5.0 / 5
TEST VERDICT: Highly Recommended

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