CX/Gravel Tire Test: Specialized Pathfinder TLR 50

Specialized revamped its gravel tire lineup back in 2025, and the new Pathfinder TLR quickly gathered enough Pro Member votes to hit our test lab shortly after its original release. Following the recent trend towards larger gravel bike tires, Specialized just updated the Pathfinder TLR range with the high-volume 50 mm and 29x2.2 sizes. We have now put the Pathfinder TLR 50 mm through our tests, and we've found some surprising differences that point to an updated compound.

Having previously tested the 40 mm and 45 mm versions of the new Pathfinder TLR, we already have a solid understanding of how the updated casing and Gripton compound perform. However, wider versions often—though not always—bring structural differences, such as scaled tread thickness, taller side knobs, or modified casing construction, that can alter rolling resistance and puncture protection compared to their narrower siblings.

If you want an in-depth breakdown of the construction, compound updates, and direct changes of the 2025 Pathfinder TLR when compared to the previous-generation Pathfinder Pro 2Bliss Ready, jump over to our original 40 mm review that goes more in depth on the changes.

In this review, we're going to compare the 50 mm Pathfinder TLR directly against the 40 mm and 45 mm versions of the Pathfinder TLR, the 47 mm Pathfinder Pro 2Bliss Ready (tested in 2024), and a selection of popular 48–50 mm semi-slick gravel tires with similar specifications.

Manufacturer Specifications

Manufacturer Specs
Brand	Specialized
Model	Pathfinder TLR
Year	2026
Supplied By	Bought in store
New or Used	New
Mileage	0 km
Price Range	High
Buy At
Manufacturer part number	00026-4493
EAN	196625278495
TPI	60
Compound	Gripton T2/T5
Bead	Folding
ETRTO	50-622
Specified Weight	580 grams
Max Air Pressure (psi)	50
Made In	Pro Data
Available Sizes	35-622 (700x35c) 40-622 (700x40c) 45-622 (700x45c) 50-622 (700x50c) 55-622 (700x55c)

Specialized Pathfinder TLR 50 Test Results

Size, Weight, and Thickness Measurements

Size, Weight, and Thickness Measurements
Specified Weight	580 grams
Measured Weight	567 grams
Measured Width Casing	47 mm (un-round)
Measured Width Tread	47 mm
Measured Height	Pro Data
Tire Circumference	Pro Data
Measured Knob Height Center	0.0 mm
Measured Knob Height Edge	2.0 mm
Measured Total Thickness Center (excluding knobs)	3.00 mm
Measured Total Thickness Sidewall	Pro Data
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
Inner Tube	None (30 ml sealant)
Measured Width	47 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 barHigh Air Pressure (42 psi / 2.9 bar)	Pro Data
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 barMedium Air Pressure (35 psi / 2.4 bar)	Pro Data
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 barLow Air Pressure (28 psi / 1.9 bar)	17.0 Watts CRR: 0.00510
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 barExtra Low Air Pressure (21 psi / 1.4 bar)	Pro Data
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)
Total Puncture Score Tread	46 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	3.00 mm
Sidewall Puncture Force Sharp Needle	Pro Data
Sidewall Puncture Force Blunt Needle	Pro Data
Sidewall Total Tire Thickness	Pro Data

Hard Surface Static Grip Test Results

Static Grip Test Results
Wet Grip Average	71 Points
Wet Grip Center	Pro Data
Wet Grip Edge	Pro Data
Measured Knob Height Center	0.0 mm
Measured Knob Height Edge	2.0 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

The 50 mm Pathfinder TLR rolls surprisingly fast, and it's now the fastest Pathfinder we've tested to date. When we compare the 50 mm Pathfinder to the 45 mm Pathfinder that already rolled faster than all other Pathfinders, we see rolling resistance comes in another 15% lower, which is more than we usually see with a simple size change. We believe the new (at least the 50 mm) Pathfinders come with an updated or retuned compound (more Gripton T2, less Gripton T5), as that's the only way it can roll this much faster.

When we factor in the results from our wet grip tests, we're even more certain the compound has changed. We usually see that larger sizes of the same tire offer more grip in this test, but the 50 mm Pathfinder scores just 73 points in the wet grip center test, while the 40 and 45 sizes score 84 and 83 points, respectively. A faster-rolling compound usually offers less wet grip, and that's exactly what we see with the new 50 mm Pathfinder.

We find the 50 mm Pathfinder TLR a more balanced semi-slick tire, and that's why we rate it higher than both the 40 and 45 mm sizes. We're wondering whether the latest production batches of the 40 and 45 mm Pathfinder also roll faster, but we can only know that by retesting them. For now, the safest path to a fast Pathfinder is the high-volume 50 mm size.

Compare the 45 and 50 mm Specialized Pathfinder TLR on our comparison section.

RATING: 4.1 / 5
TEST VERDICT: Highly Recommended

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