Independent comparison tire tests are the best source of data to get tire information from, and the good news is there have been ten tests which compare both tires directly!
Tire | Test Wins | Performance |
---|---|---|
Goodyear Eagle F1 Asymmetric 6 | ten |
While it might look like the Goodyear Eagle F1 Asymmetric 6 is better than the Falken Azenis FK520 purely based on the higher number of test wins, tires are very complicated objects which means where one tire is better than the other can be more important in real world use.
Let's look at how the two tires compare across multiple tire test categories.
Looking at data from nine tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during six dry braking tests. On average the Goodyear Eagle F1 Asymmetric 6 stopped the vehicle in 0.7% less distance than the Falken Azenis FK520.
Best In Dry Braking: Goodyear Eagle F1 Asymmetric 6
See how the Dry Braking winner was calculated >>
2023 Summer Tire Market Overview 225/45 R18 |
Falken Azenis FK520:33.7M | ✓ Goodyear Eagle F1 Asymmetric 6: 33.2M |
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:35M | ✓ Goodyear Eagle F1 Asymmetric 6: 34.3M |
2023 AZ UHP Summer Tire Test 235/35 R19 |
✓ Falken Azenis FK520:32.5M | Goodyear Eagle F1 Asymmetric 6: 33M |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:33.7M | ✓ Goodyear Eagle F1 Asymmetric 6: 33.2M |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:35.2M | ✓ Goodyear Eagle F1 Asymmetric 6: 33.8M |
Best Performance Tires For 2025 225/40 R18 |
✓ Falken Azenis FK520:33.67M | Goodyear Eagle F1 Asymmetric 6: 34.26M |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:34.2M | ✓ Goodyear Eagle F1 Asymmetric 6: 33.3M |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:35.8M | ✓ Goodyear Eagle F1 Asymmetric 6: 35.5M |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:33.2M | Goodyear Eagle F1 Asymmetric 6: 34.3M |
Looking at data from three tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during three dry handling [s] tests. On average the Goodyear Eagle F1 Asymmetric 6 was 0.69% faster around a lap than the Falken Azenis FK520.
Best In Dry Handling [s]: Goodyear Eagle F1 Asymmetric 6
See how the Dry Handling winner was calculated >>
2023 AZ UHP Summer Tire Test 235/35 R19 |
Falken Azenis FK520:99.4s | ✓ Goodyear Eagle F1 Asymmetric 6: 99.1s |
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:83.325s | ✓ Goodyear Eagle F1 Asymmetric 6: 82.47s |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:69.4s | ✓ Goodyear Eagle F1 Asymmetric 6: 68.8s |
Looking at data from four tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during two dry handling [km/h] tests. On average the Goodyear Eagle F1 Asymmetric 6 was 0.41% faster around a lap than the Falken Azenis FK520.
Best In Dry Handling [Km/H]: Goodyear Eagle F1 Asymmetric 6
See how the Dry Handling winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
✓ Falken Azenis FK520:114.3Km/H | Goodyear Eagle F1 Asymmetric 6: 114.1Km/H |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:119.2Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 120.9Km/H |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:100.6Km/H | Goodyear Eagle F1 Asymmetric 6: 100.6Km/H |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
Falken Azenis FK520:107.8Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 108.1Km/H |
Looking at data from one tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during one subj. dry handling tests. On average the Goodyear Eagle F1 Asymmetric 6 scored 10% more points than the Falken Azenis FK520.
Best In Subj. Dry Handling: Goodyear Eagle F1 Asymmetric 6
See how the Subj. Dry Handling winner was calculated >>
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:9 Points | ✓ Goodyear Eagle F1 Asymmetric 6: 10 Points |
Looking at data from nine tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during seven wet braking tests. On average the Goodyear Eagle F1 Asymmetric 6 stopped the vehicle in 3.88% less distance than the Falken Azenis FK520.
Best In Wet Braking: Goodyear Eagle F1 Asymmetric 6
See how the Wet Braking winner was calculated >>
2023 Summer Tire Market Overview 225/45 R18 |
Falken Azenis FK520:27M | ✓ Goodyear Eagle F1 Asymmetric 6: 25.4M |
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:43.2M | ✓ Goodyear Eagle F1 Asymmetric 6: 40.8M |
2023 AZ UHP Summer Tire Test 235/35 R19 |
✓ Falken Azenis FK520:40.1M | Goodyear Eagle F1 Asymmetric 6: 40.6M |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:42.2M | ✓ Goodyear Eagle F1 Asymmetric 6: 39.7M |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:24.5M | ✓ Goodyear Eagle F1 Asymmetric 6: 23.8M |
Best Performance Tires For 2025 225/40 R18 |
✓ Falken Azenis FK520:22.57M | Goodyear Eagle F1 Asymmetric 6: 23.33M |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:48.2M | ✓ Goodyear Eagle F1 Asymmetric 6: 43.3M |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:30.5M | ✓ Goodyear Eagle F1 Asymmetric 6: 29.5M |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
Falken Azenis FK520:48.4M | ✓ Goodyear Eagle F1 Asymmetric 6: 47.6M |
Looking at data from one tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during one wet braking - concrete tests. On average the Goodyear Eagle F1 Asymmetric 6 stopped the vehicle in 5.04% less distance than the Falken Azenis FK520.
Best In Wet Braking - Concrete: Goodyear Eagle F1 Asymmetric 6
See how the Wet Braking - Concrete winner was calculated >>
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:37.7M | ✓ Goodyear Eagle F1 Asymmetric 6: 35.8M |
Looking at data from three tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during two wet handling [s] tests. On average the Goodyear Eagle F1 Asymmetric 6 was 1.38% faster around a wet lap than the Falken Azenis FK520.
Best In Wet Handling [s]: Goodyear Eagle F1 Asymmetric 6
See how the Wet Handling winner was calculated >>
2023 AZ UHP Summer Tire Test 235/35 R19 |
Falken Azenis FK520:68.9s | ✓ Goodyear Eagle F1 Asymmetric 6: 68.4s |
Best Performance Tires For 2025 225/40 R18 |
✓ Falken Azenis FK520:102.9s | Goodyear Eagle F1 Asymmetric 6: 104.29s |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:74s | ✓ Goodyear Eagle F1 Asymmetric 6: 69.7s |
Looking at data from four tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during three wet handling [km/h] tests. On average the Goodyear Eagle F1 Asymmetric 6 was 2.74% faster around a wet lap than the Falken Azenis FK520.
Best In Wet Handling [Km/H]: Goodyear Eagle F1 Asymmetric 6
See how the Wet Handling winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:83.8Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 86.2Km/H |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:73.1Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 76.7Km/H |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:83.1Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 86.4Km/H |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:86.6Km/H | Goodyear Eagle F1 Asymmetric 6: 86.5Km/H |
Looking at data from one tire tests, the Falken Azenis FK520 and Goodyear Eagle F1 Asymmetric 6 performed equally well in subj. wet handling tests.
Best In Subj. Wet Handling: Both tires performed equally well
See how the Subj. Wet Handling winner was calculated >>
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:9 Points | Goodyear Eagle F1 Asymmetric 6: 9 Points |
Looking at data from one tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during one wet circle tests. On average the Goodyear Eagle F1 Asymmetric 6 had 2.58% higher lateral wet grip than the Falken Azenis FK520.
Best In Wet Circle: Goodyear Eagle F1 Asymmetric 6
See how the Wet Circle winner was calculated >>
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:8.3m/s | ✓ Goodyear Eagle F1 Asymmetric 6: 8.52m/s |
Looking at data from eight tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during six straight aqua tests. On average the Goodyear Eagle F1 Asymmetric 6 floated at a 0.97% higher speed than the Falken Azenis FK520.
Best In Straight Aqua: Goodyear Eagle F1 Asymmetric 6
See how the Straight Aqua winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:77.6Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 77.9Km/H |
2023 AZ UHP Summer Tire Test 235/35 R19 |
Falken Azenis FK520:78.8Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 79.3Km/H |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:104.1Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 106.3Km/H |
2023 Sport Auto UHP Tire Test 225/40 R18 |
✓ Falken Azenis FK520:80.6Km/H | Goodyear Eagle F1 Asymmetric 6: 79.1Km/H |
Best Performance Tires For 2025 225/40 R18 |
✓ Falken Azenis FK520:75.5Km/H | Goodyear Eagle F1 Asymmetric 6: 75.2Km/H |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:75.3Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 75.9Km/H |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:78.7Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 79.4Km/H |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
Falken Azenis FK520:82.8Km/H | ✓ Goodyear Eagle F1 Asymmetric 6: 86.7Km/H |
Looking at data from six tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during four curved aquaplaning tests. On average the Goodyear Eagle F1 Asymmetric 6 slipped out at a 5.73% higher speed than the Falken Azenis FK520.
Best In Curved Aquaplaning: Goodyear Eagle F1 Asymmetric 6
See how the Curved Aquaplaning winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
✓ Falken Azenis FK520:2.82m/sec2 | Goodyear Eagle F1 Asymmetric 6: 2.66m/sec2 |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:3.38m/sec2 | ✓ Goodyear Eagle F1 Asymmetric 6: 3.93m/sec2 |
2023 Sport Auto UHP Tire Test 225/40 R18 |
✓ Falken Azenis FK520:3.47m/sec2 | Goodyear Eagle F1 Asymmetric 6: 3.38m/sec2 |
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:2.95m/sec2 | ✓ Goodyear Eagle F1 Asymmetric 6: 3.15m/sec2 |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:2.8m/sec2 | ✓ Goodyear Eagle F1 Asymmetric 6: 3.1m/sec2 |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
Falken Azenis FK520:2.32m/sec2 | ✓ Goodyear Eagle F1 Asymmetric 6: 2.59m/sec2 |
Looking at data from one tire tests, the Falken Azenis FK520 was better during one gravel handling [km/h] tests. On average the Falken Azenis FK520 was 0.82% faster around a lap than the Goodyear Eagle F1 Asymmetric 6.
Best In Gravel Handling [Km/H]: Falken Azenis FK520
See how the Gravel Handling winner was calculated >>
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:60.8Km/H | Goodyear Eagle F1 Asymmetric 6: 60.3Km/H |
Looking at data from one tire tests, the Falken Azenis FK520 was better during one gravel traction tests. On average the Falken Azenis FK520 had 1.61% better traction on gravel than the Goodyear Eagle F1 Asymmetric 6.
Best In Gravel Traction: Falken Azenis FK520
See how the Gravel Traction winner was calculated >>
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:10530N | Goodyear Eagle F1 Asymmetric 6: 10360N |
Looking at data from one tire tests, the Falken Azenis FK520 was better during one sand traction tests. On average the Falken Azenis FK520 had 3.08% better traction in sand than the Goodyear Eagle F1 Asymmetric 6.
Best In Sand Traction: Falken Azenis FK520
See how the Sand Traction winner was calculated >>
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:10050N | Goodyear Eagle F1 Asymmetric 6: 9740N |
Best In Grass Traction: Falken Azenis FK520
See how the Grass Traction winner was calculated >>
Looking at data from two tire tests, the Falken Azenis FK520 was better during one subj. comfort tests. On average the Falken Azenis FK520 scored 5.71% more points than the Goodyear Eagle F1 Asymmetric 6.
Best In Subj. Comfort: Falken Azenis FK520
See how the Subj. Comfort winner was calculated >>
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:9.5 Points | Goodyear Eagle F1 Asymmetric 6: 9.5 Points |
2025 AZ Summer Tire Test 225/45 R18 |
✓ Falken Azenis FK520:8 Points | Goodyear Eagle F1 Asymmetric 6: 7 Points |
Looking at data from eight tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during six noise tests. On average the Goodyear Eagle F1 Asymmetric 6 measured 0.76% quieter than the Falken Azenis FK520.
Best In Noise: Goodyear Eagle F1 Asymmetric 6
See how the Noise winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:66.6dB | ✓ Goodyear Eagle F1 Asymmetric 6: 66.5dB |
2023 AZ UHP Summer Tire Test 235/35 R19 |
Falken Azenis FK520:69dB | ✓ Goodyear Eagle F1 Asymmetric 6: 67dB |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
✓ Falken Azenis FK520:73dB | Goodyear Eagle F1 Asymmetric 6: 73.2dB |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:71.3dB | ✓ Goodyear Eagle F1 Asymmetric 6: 70.9dB |
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:71.7dB | ✓ Goodyear Eagle F1 Asymmetric 6: 71.2dB |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:69dB | ✓ Goodyear Eagle F1 Asymmetric 6: 68dB |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:71.7dB | ✓ Goodyear Eagle F1 Asymmetric 6: 71.2dB |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:63.9dB | Goodyear Eagle F1 Asymmetric 6: 64dB |
Looking at data from three tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during three wear tests. On average the Goodyear Eagle F1 Asymmetric 6 is predicted to cover 19.82% miles before reaching 1.6mm than the Falken Azenis FK520.
Best In Wear: Goodyear Eagle F1 Asymmetric 6
See how the Wear winner was calculated >>
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:44800KM | ✓ Goodyear Eagle F1 Asymmetric 6: 63200KM |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:40000KM | ✓ Goodyear Eagle F1 Asymmetric 6: 50000KM |
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:46700KM | ✓ Goodyear Eagle F1 Asymmetric 6: 50800KM |
Looking at data from three tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during two value tests. On average the Goodyear Eagle F1 Asymmetric 6 proved to have a 8.87% better value based on price/1000km than the Falken Azenis FK520.
Best In Value: Goodyear Eagle F1 Asymmetric 6
See how the Value winner was calculated >>
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:11.38Price/1000 | ✓ Goodyear Eagle F1 Asymmetric 6: 8.7Price/1000 |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:14.38Price/1000 | ✓ Goodyear Eagle F1 Asymmetric 6: 13.3Price/1000 |
2025 ADAC Summer Tire Test 225/40 R18 |
✓ Falken Azenis FK520:9.42Price/1000 | Goodyear Eagle F1 Asymmetric 6: 10.08Price/1000 |
Looking at data from four tire tests, the Falken Azenis FK520 was better during four price tests. On average the Falken Azenis FK520 cost 11.61% less than the Goodyear Eagle F1 Asymmetric 6.
Best In Price: Falken Azenis FK520
See how the Price winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
✓ Falken Azenis FK520:375 | Goodyear Eagle F1 Asymmetric 6: 430 |
2023 AZ UHP Summer Tire Test 235/35 R19 |
✓ Falken Azenis FK520:595 | Goodyear Eagle F1 Asymmetric 6: 700 |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
✓ Falken Azenis FK520:510 | Goodyear Eagle F1 Asymmetric 6: 550 |
2023 Sport Auto UHP Tire Test 225/40 R18 |
✓ Falken Azenis FK520:96 | Goodyear Eagle F1 Asymmetric 6: 103 |
Looking at data from seven tire tests, the Goodyear Eagle F1 Asymmetric 6 was better during six rolling resistance tests. On average the Goodyear Eagle F1 Asymmetric 6 had a 2.01% lower rolling resistance than the Falken Azenis FK520.
Best In Rolling Resistance: Goodyear Eagle F1 Asymmetric 6
See how the Rolling Resistance winner was calculated >>
2023 AutoBild Sports Car Summer Tire Test 225/40 R18 |
Falken Azenis FK520:8.8kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.5kg / t |
2023 AZ UHP Summer Tire Test 235/35 R19 |
Falken Azenis FK520:8.48kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.39kg / t |
2023 AutoBild UHP Summer Tire Test 225/45 R18 |
Falken Azenis FK520:8.61kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.01kg / t |
2023 Sport Auto UHP Tire Test 225/40 R18 |
Falken Azenis FK520:8.6kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.3kg / t |
Best Performance Tires For 2025 225/40 R18 |
Falken Azenis FK520:8.9kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.7kg / t |
2025 AZ Summer Tire Test 225/45 R18 |
Falken Azenis FK520:8.7kg / t | ✓ Goodyear Eagle F1 Asymmetric 6: 8.35kg / t |
2025 Autobild SUV Off-Road Summer Tire Test 255/55 R18 |
✓ Falken Azenis FK520:7.15kg / t | Goodyear Eagle F1 Asymmetric 6: 7.81kg / t |
Looking at data from one tire tests, the Falken Azenis FK520 and Goodyear Eagle F1 Asymmetric 6 performed equally well in fuel consumption tests.
Best In Fuel Consumption: Both tires performed equally well
See how the Fuel Consumption winner was calculated >>
2025 ADAC Summer Tire Test 225/40 R18 |
Falken Azenis FK520:5.6l/100km | Goodyear Eagle F1 Asymmetric 6: 5.6l/100km |
Looking at data from one tire tests, the Falken Azenis FK520 was better during one abrasion tests. On average the Falken Azenis FK520 emitted 16.58% less particle wear matter than the Goodyear Eagle F1 Asymmetric 6.
Best In Abrasion: Falken Azenis FK520
See how the Abrasion winner was calculated >>
2025 ADAC Summer Tire Test 225/40 R18 |
✓ Falken Azenis FK520:61.9mg/km/t | Goodyear Eagle F1 Asymmetric 6: 74.2mg/km/t |
Most drivers find the Falken Azenis FK520 delivers excellent dry and strong wet grip with progressive, predictable handling and very good value, often rivaling premium brands. Comfort and noise are generally good to very good, with several noting improved braking and stability and acceptable to good wear. A minority report drawbacks such as softer/less precise handling feel, vibrations or wobble at certain speeds/pressures, and performance drop-off under extended hard driving.
Based on 35 reviews with an average rating of 84%
Drivers overwhelmingly praise the Goodyear Eagle F1 Asymmetric 6 for outstanding wet and dry grip, confident braking, and a strong comfort/noise balance, often noting improved steering feel and overall handling versus prior tires (Michelin PS4/PS5, Pirelli, Bridgestone). While most find it quiet and comfortable, a notable minority report faster-than-expected wear and occasional soft sidewall/understeer or noise on rough surfaces; overall sentiment remains strongly positive.
Based on 149 reviews with an average rating of 86%
Looking for more tire comparisons? Here are other direct comparisons involving these tires:
This page has been developed using tire industry testing best practices. This means we are only comparing tests which have had both tires in the same test.
Why is this important? Tire testing is heavily affected by things like surface grip levels and surface temperature, which means you can only compare values from the same day. During a tire test external condition changes are calculated into the overall results, but it is not possible to calculate this between tire tests performed on different days or at different locations.
As a result you will see other tests on Tire Reviews which feature both the %s and %s, but as they weren't conducted on the same day, the results are not comparable.
Lots of other websites do this sort of tire comparison, Tire Reviews doesn't.