CX/Gravel Tire Test: Specialized Pathfinder TLR 40

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  • Specialized Pathfinder TLR 40
Performance compared to all other CX/Gravel tires
(100% is best)
Pro Members get 11-point radar charts

Specialized Pathfinder TLR 40 road bike tire on a rolling resistance test machine

Specialized has recently revamped almost its entire tire lineup, and the Pathfinder is the first tire we've tested from this new series. The Pathfinder Pro 2Bliss Ready has long been one of our website's most popular semi-slick gravel tires, so we are not surprised that the new Pathfinder TLR quickly gathered enough Pro Member votes to get tested.


We can already tell you that the new Pathfinder TLR is a completely different tire, and all the important aspects have changed: casing, compound, and tread pattern. This is unsurprising since it comes from a different factory in another country.


The casing is now 60 TPI compared to the 120 TPI casing of the old Pathfinder Pro (read our review). We see this more often with tubeless-ready tires because a 60 TPI casing is stronger, and you need a stronger casing for tubeless-ready tires. On paper, the most significant advantage of the new Pathfinder TLR is that it is lighter than the old versions, which were quite heavy for this type of tire.


The compound is now the Gripton T2/T5 dual compound, with the harder T2 compound in the center and the softer T5 compound on the sides. Specialized also claims great improvements here, but we have not been able to confirm this in previous tests of this compound, as the original single compound Gripton was one of the strongest performing compounds.


The tread pattern is also new, and we expect that some of the weight reduction is due to it because the tread is more open, and the knob height is substantially lower than that of the previous Pathfinder Pro 2Bliss Ready.


The Pathfinder TLR is also available in new sizes: 35-622, 40-622, and 45-622. We find it odd that they chose 35-622 instead of a 50-622 version. We are seeing larger and larger gravel tires, and Specialized is going against the trend since the previous Pathfinder was available in the 38-622, 42-622, and 47-622 sizes.


What is also new and very much in line with current trends is that all sizes are available with tan or black walls. We tested the 40-622 version with tan walls, and below are our results.


Manufacturer Specifications


Manufacturer Specs
Brand Specialized
Model Pathfinder TLR
Year 2025
Supplied By Bought in store
New or Used New
Mileage 0 km
Price Range High
Buy At
Manufacturer part number 00025-4492
EAN0196625207969
TPI 60
Compound Gripton T2/T5
Bead Folding
ETRTO 40-622
Specified Weight 470 grams
Max Air Pressure (psi) 65
Made In Members Only
Available Sizes 35-622 (700x35c)
40-622 (700x40c)
45-622 (700x45c)

Specialized Pathfinder TLR 40 Test Results

Specialized Pathfinder TLR 40  mountain bike tire on a rolling resistance test machine

Size, Weight, and Thickness Measurements


Size, Weight, and Thickness Measurements
Specified Weight 470 grams
Measured Weight 449 grams
Measured Width Casing 38 mm (un-round)
Measured Width Tread 39 mm
Measured Height 35 mm (un-round)
Measured Knob Height Center 0.0 mm
Measured Knob Height Edge 1.5 mm
Measured Total Thickness Center (excluding knobs) 3.10 mm
Measured Total Thickness Sidewall Members 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
Inner Tube None (30 ml sealant)
Measured Width 38 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

(54 psi / 3.7 bar)
Members 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

(45 psi / 3.1 bar)
Members 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

(36 psi / 2.6 bar)
20.8 Watts
CRR: 0.00624
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

(27 psi / 1.9 bar)
23.8 Watts
CRR: 0.00713
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

Specialized Pathfinder TLR 40  mountain bike tire on a rolling resistance test machine
Puncture Resistance Test Results (higher is better)
Total Puncture Score Tread 44 Points
Total Puncture Score Sidewall Members Only
Tread Puncture Force Sharp Needle Members Only
Tread Puncture Force Blunt Needle Members Only
Tread Total Tire Thickness 3.10 mm
Sidewall Puncture Force Sharp Needle Members Only
Sidewall Puncture Force Blunt Needle Members Only
Sidewall Total Tire Thickness Members Only

Hard Surface Static Grip Test Results

Specialized Pathfinder TLR road bike tire on a grip test machine
Static Grip Test Results
Wet Grip Average 76 Points
Wet Grip Center Members Only
Wet Grip Edge Members Only
Measured Knob Height Center 0.0 mm
Measured Knob Height Edge 1.5 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


  • Specialized Pathfinder TLR 40
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 11-point radar charts

Unfortunately, the new Pathfinder TLR is not convincing compared to the previous Pathfinder Pro 2Bliss Ready (read our review). Apart from the weight, there is very little progress, with even some aspects showing regression. The weight is now only in line with the competition since the old Pathfinder Pro 2Bliss Ready was a heavy tire.


And yes, we tested the tire in the correct direction despite what the photos might suggest. Specialized chooses to place the Pathfinder logo only on one side, so we only flipped it for the photos.


Unfortunately for Specialized, many other manufacturers have improved their products over the past few years, making the current version less competitive than the previous version, which was one of the best choices of its time.


Compare the new Pathfinder TLR and old Pathfinder Pro 2Bliss Ready on our comparison section


RATING: 3.7 / 5
TEST VERDICT:
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