Road Bike Tire Test: Pirelli P Zero Race 4S

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  • Pirelli P Zero Race 4S
Performance compared to all other road bike tires
(100% is best)
Pro Members get 11-point radar charts



Pirelli P Zero Race 4S road bike tire on a rolling resistance test machine

Choosing the right all-season / 4-season road bike tire can be hard as those concepts have different meanings in different parts of the world. We've seen some "all-season" tires that are totally optimized towards grip and some others that are bullet proof from a puncture resistance stand point. Pirelli's take on a 4-season tire seems different again and we consider the Pirelli P Zero Race 4S to be a "performance all-season" tire with an exceptionally low rolling resistance for an all-season tire.


Ad Buy Pirelli P Zero Race 4S at Amazon.com


The P Zero Race 4S replaces the P Zero Velo 4S (read our review) which was Pirelli's first try at a 4-season tire and we tested that tire back in 2017. As we've only introduced our wet grip test recently, we can't compare grip of the new and old versions but at least we'll be able to compare many other parts that should give a good indication of the changes.


We'll also compare it to the "regular" P Zero Race (read our review) and the P Zero Road (read our review) which were both released back in 2021, and together with the Race 4S, make up Pirelli's traditonal tube-type (clincher) road bike range. We're not aware yet of a TLR version of the 4S yet but given that tubeless road bike tires seem very popular these days, that would be a great addition.


The P Zero Race 4S is only available in the 26-622 and 28-622 sizes which seems a bit limited these days. We've tested the 26-622 version and we'll compare it to some of the most popular tube-type road bike tires.

Manufacturer Specifications


Manufacturer Specifications
Brand Pirelli
Model P Zero Race 4S
Year 2022
Tire Type Tubetype (clincher)
Supplied By Bought in store
New or Used New
Mileage 0 km
Price Range High
Buy At Ad Amazon.com
Manufacturer part number 4203200
EAN8019227420326
TPI 120
Compound SmartEvo
Bead Folding
ETRTO 26-622
Size Inch 28"
Specified Width (mm) 26
Specified Weight 240 grams
Max Air Pressure (psi) 116
Made In Members Only
Available Sizes 26-622 (700x26c)
28-622 (700x28c)

Pirelli P Zero Race 4S Test Results

Pirelli P Zero Race 4S road bike tire on a rolling resistance test machine

Size, Weight, and Thickness Measurements


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Size, Weight and Thickness Measurements
Specified Weight 240 grams
Measured Weight 233 grams
System Adjusted Weight
(tire + inner tube (100 gr)
333 grams
Measured Width 27 mm (un-round)
Measured Height 24 mm (un-round)
Total Tire Thickness Center 2.9 mm
Total Tire Thickness Sidewall Members Only
Unmounted Casing Width 65 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 Conti Race28 (100gr butyl)
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
28-29 = 108 psi/7.4 bar
Ultra High Air Pressure

(120 psi / 8.3 bar)
11.6 Watts
CRR: 0.00348
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)
12.3 Watts
CRR: 0.00369
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

Pirelli P Zero Race 4S road bike tire on a rolling resistance test machine
Puncture Resistance Test Results (higher is better)
Total Puncture Score Tread 50 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 2.9 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

Pirelli P Zero Race 4S road bike tire on a grip test machine
Static Grip Test Results
Wet Grip Average 73 Points
Wet Grip Center Members Only
Wet Grip Edge Members Only
Grip in points = coefficient of friction * 100

Conclusion


  • Pirelli P Zero Race 4S
Performance compared to all other road bike tires
(100% is best)

Pro Members get 11-point radar charts

The Pirelli P Zero Race 4S performs surprisingly strong in nearly all of our tests and only the wet grip tests seems to indicate this is an all-season tire. Rolling resistance is surprisingly strong and puncture resistance seems to be in-line with most other all-round road bike tires. When compared to the previous edition of this tire (P Zero Velo 4S) we also see that rolling resistance has gone down at the cost of less puncture resistance.


When we compare the P Zero Race 4S against both the P Zero Race (read our review) and P Zero Road (read our review), the 4S completely outclasses those tires. Surpringly, even when it comes down to rolling resistance, the 4S is the better choice out of those tires. This might seems strange but we feel this is possible because the 4S is made in Pirelli's new factory in Italy and they seem to be made to a higher quality than the previous editions.


When compared to other tires from competing brands, we now consider the P Zero Race 4S to be 1 of the 3 top-performing road bike tires together with both the Continental Grand Prix 5000 (read our review) and Michelin Power Cup (read our review). There are some slight differences between these tires and it depends on your preferences which one will suit you best. Jump over to our comparison section to compare these tires side by side:


Pirelli P Zero Race 4S Vs Continental Grand Prix 5000 Vs Michelin Power Cup

Ad Buy Pirelli P Zero Race 4S at Amazon.com


RATING: 5.0 / 5
TEST VERDICT:
Highly Recommended


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