Nokian PowerProof vs Bridgestone Potenza Sport
In the 2 independent tests that ran both tires, the Bridgestone Potenza Sport finished ahead 2 times and the PowerProof not once. The PowerProof was stronger in comfort and value, the Potenza Sport in dry and wet.
Performance profile
6 measurements from the 2 shared tests, each tire shown as its share of the better figure in every test.
Where each is furthest ahead
PowerProof
Potenza Sport
Point at or tap any spoke for both tires' figures.
In each test the better of the two figures counts as 100% and the other as its share of it, so a 118 ft stop against 112 ft is 95%; each spoke averages the shared tests that recorded it. 4 measurements recorded in only one shared test are left off; every measurement is in the table further down.
Where each scores higher
PowerProof
Potenza Sport
Point at or tap any spoke for both tires' figures.
Category scores are percentiles among tires of the same season and class: 90 means this tire out-performs 90% of them, measured across every test we hold, not only the ones it appeared in.
Where owners rate each higher
PowerProof
Potenza Sport
Point at or tap any spoke for both tires' figures.
Owners rate the PowerProof 80% from 28 reviews and the Potenza Sport 80% from 139. Each spoke is one question owners answer out of 10; reviews are vetted by hand before publication.
Every measurement, side by side
Averages of the figures both tires posted in the same tests. The gap is the average of each test's own gap, so figures from different cars and years are never mixed. Wins count the tests in which each tire did better.
| Measurement | PowerProof | Gap | Potenza Sport | Wins |
|---|---|---|---|---|
| Dry Potenza Sport ahead | ||||
| Dry Braking ft | 115 | 3% | 112 | 0-2 |
| Dry Handling (s) | 96.17 | 1.9% | 94.34 | 0-1 |
| Dry Handling (mph) | 72.1 | 3.2% | 74.4 | 0-1 |
| Wet Potenza Sport ahead | ||||
| Wet Braking ft | 150 | 8% | 137 | 0-2 |
| Wet Handling (s) | 65.63 | 1.7% | 64.53 | 0-1 |
| Wet Handling (mph) | 44.1 | 4.2% | 45.9 | 0-1 |
| Straight Aqua mph | 44.5 | 2.9% | 45.8 | 0-2 |
| Curved Aquaplaning ft/s² | 7 | 7.9% | 7.6 | 0-2 |
| Comfort PowerProof ahead | ||||
| Noise dB | 72.2 | 0.5 dB | 72.7 | 2-0 |
| Value PowerProof ahead | ||||
| Rolling Resistance kg / t | 8.85 | 7.1% | 9.52 | 2-0 |
Braking distances and lap times are better when lower; speeds, wear and grip figures when higher. A test's figures are its own: sizes, cars, surfaces and temperatures differ from one to the next, which is why the averages here are only ever of tests the two tires shared.
Head to head in 2 tests in 2021
Each row is one published test in which both tires ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | PowerProof | Field | Potenza Sport |
|---|---|---|---|
| 2021 Tire Reviews UHP Summer Tire Test | P8 of 14 | P2 of 14 | |
| 2021 Auto Bild 19 inch Summer Tire Test | P12 of 15 | P2 of 15 |
PowerProof vs Potenza Sport: your questions
Is the Nokian PowerProof or the Bridgestone Potenza Sport the better tire?
In the 2 independent tests that ran both tires, the Bridgestone Potenza Sport finished ahead 2 times and the PowerProof not once. On the Tire Reviews Score, which weighs every test and review we hold, the PowerProof scores 8.4 and the Potenza Sport 9.3 out of 10.
Which is better in the wet, the PowerProof or the Potenza Sport?
The Potenza Sport led 8 of the 8 wet measurements the shared tests recorded. On average it stopped 8% shorter in the wet across 2 tests.
Which is better in the dry?
The Potenza Sport led 4 of the 4 dry measurements the shared tests recorded. On average it stopped 3% shorter in the dry across 2 tests.
Which lasts longer and costs less to run?
The PowerProof had 7.1% lower rolling resistance (2 tests). Owners rate wear 6.4/10 for the PowerProof and 6.1/10 for the Potenza Sport.
Which is quieter and more comfortable?
The PowerProof was 0.5 dB quieter (2 tests). Owners rate comfort 8.6/10 for the PowerProof and 7/10 for the Potenza Sport.
What do owners say?
Owners rate the PowerProof 80% from 28 reviews and the Potenza Sport 80% from 139. 73% of PowerProof owners would buy it again, against 67% for the Potenza Sport.
Which is more expensive?
In the 2 tests that listed prices, the Potenza Sport was the dearer tire in 2 of them, by 16.7% on average. Prices are the test's own at the time, in its own market.
Are they available in the same sizes?
The PowerProof is made in 42 sizes (17 to 20 inch) and the Potenza Sport in 129 (16 to 24 inch). 36 sizes are available in both. On the EU label the PowerProof is graded A for wet grip and C for rolling resistance in most sizes; the Potenza Sport A and C.
Which is the newer tire?
The Potenza Sport is the newer design: it reached the market in 2021, the PowerProof in 2018. The PowerProof replaced the Nokian zLine. The Potenza Sport replaced the Bridgestone Potenza S001.
More comparisons with these tires
vs 
Bridgestone Potenza Sport vs Michelin Pilot Sport 4 S
2-8 in 10 shared tests
vs 
Bridgestone Potenza Sport vs Michelin Pilot Sport 5
7-4 in 11 shared tests
vs 
Bridgestone Potenza Sport vs Continental SportContact 7
3-10 in 15 shared tests
vs 
Bridgestone Potenza Sport vs Goodyear Eagle F1 Asymmetric 6
6-9 in 15 shared tests
vs 
Bridgestone Potenza Sport vs Pirelli P Zero PZ4
9-3 in 12 shared tests
vs 
Bridgestone Potenza Sport vs Yokohama Advan Sport V107
7-0 in 7 shared tests
vs 
Bridgestone Potenza Sport vs Kumho Ecsta Sport PS72
1-1 in 2 shared tests
vs 
Bridgestone Potenza Sport vs Pirelli P Zero PZ5
1-2 in 3 shared tests
Run either of these?
Your review is the part of this page no test can supply: how the tire wore, how it aged, what it was like in the rain in year three. It takes about five minutes.
Where this data comes from
Finishing positions and measurements are transcribed from each published test. A test only counts here when both tires ran in it, so every figure was recorded on the same car, size and day as the one it is compared to.
About the TR Score
The Tire Reviews Score rates each tire out of 10 from every independent test result and vetted owner review we hold, so two tires can be compared even before a test has run them together.
Who does the testing
Every test published as a Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.