Road Bike Tire Test: Pirelli P Zero Race TLR SL (TechWall) 28

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  • Pirelli P Zero Race TLR SL (TechWall) 28
Performance compared to all other road bike tires
(100% is best)
Pro Members get 11-point radar charts



Pirelli P Zero Race TLR SL (TechWall) 28 road bike tire on a rolling resistance test machine

The Pirelli P Zero Race TLR SL SpeedCore was one of the winners of the October Pro Members voting round. Unfortunately, we wrongfully assumed the SL would be updated with the SpeedCore casing and new compound just like the regular Race TLR and Race TLR 4S, but after contacting Pirelli, it turns out the SL won't get that update.

Even though the Race TLR SL won't get the SpeedCore update, it's still an interesting tire. We tested the original P Zero Velo Race TLR SL (read our review) back in 2020, and Pirelli did update this tire somewhere in 2022 when they removed the "Velo" part in the name. Some people already requested this tire to get tested right after the name change but, other than the hookless rim compatibility for the 28-622 version, we weren't convinced there were actual changes made to the tire.


Ad Buy Pirelli P Zero Race TLR SL (TechWall) at Amazon.com


Our test results show otherwise, and it looks like Pirelli did update this tire in 2022. It's become a bit slower, but we see a stronger overall performance in our tests. When we compare the specifications on Pirelli's website between the old and new versions, we can't spot any changes, so we're unsure how much has changed. Our test results indicate the compound has been updated, or they changed from a dual compound to a single compound to increase wet grip.


They also dropped the 24-622 size, and the latest edition of the Race TLR SL is now available in just 2 sizes: 26-622 and 28-622. We don't see that as a problem, as the 25/26 size is the smallest you want to go with tubeless road bike tires. It even looks like most road bikers are moving up to the 28-622 tire size. Going forward, that will also be the primary size we'll test when new tires get released.


This is a test of the Pirelli P Zero Race TLR SL in the 28-622 size, and we'll compare it to the 26-622 version of the old P Zero Velo Race TLR SL (read our review), the 28-622 regular P Zero Race TLR with the latest SpeedCore update (read our review), the 28-622 P Zero Race TLR 4S SpeedCore (read our review), and of course a selection of the best performing tires from the competition.

Manufacturer Specifications


Manufacturer Specifications
Brand Pirelli
Model P Zero Race TLR SL (TechWall)
Year 2024
Tire Type Tubeless
Supplied By Bought in store
New or Used New
Mileage 0 km
Price Range High
Buy At Ad Amazon.com
Manufacturer part number 3927800
EAN8019227392784
TPI 120
Compound SmartEvo
Bead Folding
ETRTO 28-622
Size Inch 28"
Specified Width (mm) 28
Specified Weight 275 grams
Max Air Pressure (psi) 101
Made In Members Only
Available Sizes 26-622 (700x26c)
28-622 (700x28c)

Pirelli P Zero Race TLR SL (TechWall) 28 Test Results

Pirelli P Zero Race TLR SL (TechWall) 28 road bike tire on a rolling resistance test machine

Size, Weight, and Thickness Measurements


Size, Weight and Thickness Measurements
Specified Weight 275 grams
Measured Weight 288 grams
System Adjusted Weight
(tire + valve + rim seal)
308 grams
Measured Width 29 mm (un-round)
Measured Height 25 mm (un-round)
Total Tire Thickness Center 2.6 mm
Total Tire Thickness Sidewall Members Only
Unmounted Casing Width 71 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 29 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

(108 psi / 7.4 bar)
11.3 Watts
CRR: 0.00339
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

(90 psi / 6.2 bar)
12.2 Watts
CRR: 0.00366
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

(72 psi /5.0 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

(54 psi / 3.7 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 TLR SL (TechWall) 28 road bike tire on a rolling resistance test machine
Puncture Resistance Test Results (higher is better)
Total Puncture Score Tread 46 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

Pirelli P Zero Race TLR SL (TechWall) 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
Road bike grip test rim width = 19.0 mm

Conclusion


  • Pirelli P Zero Race TLR SL (TechWall) 28
Performance compared to all other road bike tires
(100% is best)

Pro Members get 11-point radar charts

Even though the SL version of the Pirelli P Zero Race TLR didn't get the SpeedCore update, it's still a strong-performing road bike tire. Compared to the previous "Velo" edition of the SL, the latest edition of the SL rolls a bit slower but offers better puncture resistance and improved wet grip, making it an overall better tire. The SL name now is a bit misleading though as we rate it as more of an all-round road bike tire than the "ultra-fast and light" feeling Pirelli pushes for this tire.


The real problem the P Zero Race TLR SL faces comes from the regular P Zero Race TLR (read our review) that did get the SpeedCore casing and compound update. The SpeedCore tires are a significant upgrade, and the regular Race TLR is the better tire over the Race TLR SL with the older TechWall casing, which makes it kind of redundant. These might be a good deal when you get a good price on them, but we're looking forward to a potential new tire from Pirelli that does live up to the fast and light expectations.

Ad Buy Pirelli P Zero Race TLR SL (TechWall) at Amazon.com


RATING: 4.3 / 5
TEST VERDICT:
Highly Recommended


Comments



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