Road Bike Tire Test: Cadex Race Tubeless 25

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  • Cadex Race Tubeless 25
Performance compared to all other road bike tires
(100% is best)
Pro Members get 11-point radar charts



Cadex Race Tubeless 25 road bike tire on a rolling resistance test machine

The Cadex Race Tubeless is the first time we've tested a Cadex tire, and as always, we're excited to see how it performs in our tests. As Cadex is in the business of creating the best-performing cycling equipment, our expectations are set to a high level right from the start. What raises our expectations even higher, as the compound is what makes up 70-80% of a tire's performance, is that they claim they've created a compound for superior tire performance.


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According to Cadex, their RR-S Compound is a "state of the art silica-based tire compound for elite riders who demand ultimate speed and grip". They also claim this compound has "significantly less rolling resistance and boasts markedly increased grip when cornering, especially in the wet". That all sounds very good, and we're sure this compound will perform well, but the really interesting thing will be how it compares to other compounds from competing brands.


The other 20-30% of a tire's performance will be made up by the casing and additional puncture layers. In the case of the Cadex Race Tubeless, we're looking at a 170 TPI "single layer" casing which is about as good as it gets. An additional layer of "Race Shield" anti-puncture material is applied under the tread, which is similar to what we find on most other "all-round" road bike tires.


From a specification standpoint, everything sounds good, and we're sure this tire will perform well. The exciting thing will be how it compares to the competition, as pretty much all brands claim the same things about their tires. We've run the tests, so let's dive in and see how it does.

Manufacturer Specifications


Manufacturer Specifications
Brand Cadex
Model Race Tubeless
Year 2022
Tire Type Tubeless
Supplied By Bought in store
New or Used New
Mileage 0 km
Price Range Very High
Buy At
Manufacturer part number 340000202
EAN4713250833156
TPI 170
Compound RR-S
Bead Folding
ETRTO 25-622
Size Inch 28"
Specified Width (mm) 25
Specified Weight 270 grams
Max Air Pressure (psi) 125
Made In Members Only
Available Sizes 23-622 (700x23c)
25-622 (700x25c)
28-622 (700x28c)

Cadex Race Tubeless 25 Test Results

Cadex Race Tubeless 25 road bike tire on a rolling resistance test machine

Size, Weight, and Thickness Measurements


Size, Weight and Thickness Measurements
Specified Weight 270 grams
Measured Weight 276 grams
System Adjusted Weight
(tire + valve + rim seal)
296 grams
Measured Width 26 mm (un-round)
Measured Height 23 mm (un-round)
Total Tire Thickness Center 2.6 mm
Total Tire Thickness Sidewall Members Only
Unmounted Casing Width 67 mm
Unmounted Tread Width Members Only
Tread Cover (Tread / Casing Ratio) Members Only
All size measurements are taken at an air pressure of 100 psi / 6.9 bars on a 17.8 mm inner width rim.

Rolling Resistance Test Results


Rolling Resistance Test Results
Inner Tube None (20 ml sealant)
Measured Width 26 mm (un-round)
Rolling Resistance
Real tire width in mm:
22-24 = 132 psi/9.1 bar
25-27 = 120 psi/8.3 bar
28-29 = 108 psi/7.4 bar
Ultra High Air Pressure

(120 psi / 8.3 bar)
13.0 Watts
CRR: 0.00390
Rolling Resistance
Real tire width in mm:
22-24 = 110 psi/7.6bar
25-27 = 100 psi/6.9 bar
28-29 = 90 psi/6.2 bar
Extra High Air Pressure

(100 psi / 6.9 bar)
13.8 Watts
CRR: 0.00414
Rolling Resistance
Real tire width in mm:
22-24 = 88 psi/6.1 bar
25-27 = 80 psi/5.5 bar
28-29 = 72 psi/5.0 bar
High Air Pressure

(80 psi / 5.5 bar)
Members Only
Rolling Resistance
Real tire width in mm:
22-24 = 66 psi/4.6 bar
25-27 = 60 psi/4.1 bar
28-29 = 54 psi/3.7 bar
Medium Air Pressure

(60 psi / 4.1 bar)
Members Only
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

Cadex Race Tubeless 25 road bike tire on a rolling resistance test machine
Puncture Resistance Test Results (higher is better)
Total Puncture Score Tread 48 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 2.6 mm
Sidewall Puncture Force Sharp Needle Members Only
Sidewall Puncture Force Blunt Needle Members Only
Sidewall Total Tire Thickness Members Only

Static Grip Test Results

Cadex Race Tubeless road bike tire on a grip test machine
Static Grip Test Results
Wet Grip Average 71 Points
Wet Grip Center Members Only
Wet Grip Edge Members Only
Grip in points = coefficient of friction * 100

Conclusion


  • Cadex Race Tubeless 25
Performance compared to all other road bike tires
(100% is best)

Pro Members get 11-point radar charts

The Cadex Race Tubeless is an average performer in almost all of our tests. The high points of this tire are the wet grip of the center and the wide tread and corresponding high tread to casing ratio, making this an excellent tire for use on wide rims. The edge grip comes in a bit lower (still good), but we attribute this to the file tread pattern along the edge of the tire as we've seen that reduces grip due to reduced contact patch and flexibility of the file tread edges.


The main shortcoming of this tire seems to be the rolling resistance which is on the high side for a tire that is supposed to offer pinnacle performance and comes with a corresponding price tag. The Cadex Race Tubeless isn't a bad tire, and we're sure it will be a fine performer in real-life, but you can find tires that perform better and that also come at a lower price point -> Road Bike Overview.

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RATING: 3.5 / 5
TEST VERDICT:
Recommended


Comments



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