In this article we will be looking at independent tire test data, and real world driver reviews of the Goodyear EfficientGrip Performance 2 and the Michelin Primacy 4 to find out which tire is best for your own driving.
The good news is that both the Goodyear EfficientGrip Performance 2 and Michelin Primacy 4 are Premium Touring Summer tires designed to be fitted to Passenger Cars, which means comparing the two tires is relatively simple.
Both tires are hugely popular in the market place with drivers, and both have been featured in independent tire tests.
Independent comparison tire tests are the best source of data to get tire information from, and the good news is there have been fourteen tests which compare both tires directly!
Out of these fourteen tests:
While it might look like the Michelin Primacy 4 is better than the Goodyear EfficientGrip Performance 2 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 eleven tire tests, the Michelin Primacy 4 was better during eleven dry braking tests. On average the Michelin Primacy 4 stopped the vehicle in 1.9% less distance than the Goodyear EfficientGrip Performance 2.
Best In Dry Braking: Michelin Primacy 4
See how the Dry Braking winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
Goodyear EfficientGrip Performance 2:23.21M | ✓ Michelin Primacy 4: 22.24M |
2020 New 17 Inch Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:37M | ✓ Michelin Primacy 4: 36.4M |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:35.1M | ✓ Michelin Primacy 4: 34.9M |
2021 53 Summer Tire Braking Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:36.1M | ✓ Michelin Primacy 4: 35.8M |
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:38.1M | ✓ Michelin Primacy 4: 36M |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:36.1M | ✓ Michelin Primacy 4: 35.8M |
2021 ViBilagare Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:34.8M | ✓ Michelin Primacy 4: 34.7M |
2022 Summer Tire Market Overview 215/55 R17 |
Goodyear EfficientGrip Performance 2:36.8M | ✓ Michelin Primacy 4: 36.2M |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:36.8M | ✓ Michelin Primacy 4: 36.2M |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:36M | ✓ Michelin Primacy 4: 35.3M |
2022 AZ SUV Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:38M | ✓ Michelin Primacy 4: 37.1M |
Looking at data from four tire tests, the Goodyear EfficientGrip Performance 2 was better during two dry handling [s] tests. On average the Goodyear EfficientGrip Performance 2 was 0.45% faster around a lap than the Michelin Primacy 4.
Best In Dry Handling [s]: Goodyear EfficientGrip Performance 2
See how the Dry Handling winner was calculated >>
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:101.17s | Michelin Primacy 4: 102.57s |
2021 ViBilagare Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:100.3s | Michelin Primacy 4: 100.7s |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:107.8s | Michelin Primacy 4: 107.8s |
2022 AZ SUV Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:61.6s | ✓ Michelin Primacy 4: 61.5s |
Looking at data from three tire tests, the Goodyear EfficientGrip Performance 2 was better during two dry handling [km/h] tests. On average the Goodyear EfficientGrip Performance 2 was 0.03% faster around a lap than the Michelin Primacy 4.
Best In Dry Handling [Km/H]: Goodyear EfficientGrip Performance 2
See how the Dry Handling winner was calculated >>
2021 Sport Auto Summer Tire Test 195/55 R16 |
✓ Goodyear EfficientGrip Performance 2:117.4Km/H | Michelin Primacy 4: 117.2Km/H |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:94.9Km/H | Michelin Primacy 4: 94.4Km/H |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:95Km/H | ✓ Michelin Primacy 4: 95.6Km/H |
Looking at data from one tire tests, the Goodyear EfficientGrip Performance 2 was better during one subj. dry handling tests. On average the Goodyear EfficientGrip Performance 2 scored 4.44% more points than the Michelin Primacy 4.
Best In Subj. Dry Handling: Goodyear EfficientGrip Performance 2
See how the Subj. Dry Handling winner was calculated >>
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:9 Points | Michelin Primacy 4: 8.6 Points |
Looking at data from eleven tire tests, the Michelin Primacy 4 was better during nine wet braking tests. On average the Michelin Primacy 4 stopped the vehicle in 1.77% less distance than the Goodyear EfficientGrip Performance 2.
Best In Wet Braking: Michelin Primacy 4
See how the Wet Braking winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
✓ Goodyear EfficientGrip Performance 2:26.23M | Michelin Primacy 4: 28.05M |
2020 New 17 Inch Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:29.5M | ✓ Michelin Primacy 4: 29.1M |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:38.1M | Michelin Primacy 4: 39.8M |
2021 53 Summer Tire Braking Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:31.7M | ✓ Michelin Primacy 4: 30.4M |
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:37.9M | ✓ Michelin Primacy 4: 34.6M |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:49.5M | ✓ Michelin Primacy 4: 47.5M |
2021 ViBilagare Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:34.6M | ✓ Michelin Primacy 4: 33.8M |
2022 Summer Tire Market Overview 215/55 R17 |
Goodyear EfficientGrip Performance 2:29.7M | ✓ Michelin Primacy 4: 29.3M |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:46.4M | ✓ Michelin Primacy 4: 45.8M |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:33M | ✓ Michelin Primacy 4: 31.3M |
2022 AZ SUV Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:46.9M | ✓ Michelin Primacy 4: 46.7M |
Looking at data from six tire tests, the Goodyear EfficientGrip Performance 2 was better during six wet handling [s] tests. On average the Goodyear EfficientGrip Performance 2 was 0.76% faster around a wet lap than the Michelin Primacy 4.
Best In Wet Handling [s]: Goodyear EfficientGrip Performance 2
See how the Wet Handling winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
✓ Goodyear EfficientGrip Performance 2:39s | Michelin Primacy 4: 39.14s |
2020 New 17 Inch Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:101.4s | Michelin Primacy 4: 101.6s |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:70.04s | Michelin Primacy 4: 70.97s |
2021 ViBilagare Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:70.4s | Michelin Primacy 4: 70.9s |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:68.9s | Michelin Primacy 4: 69.1s |
2022 AZ SUV Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:90.3s | Michelin Primacy 4: 91.7s |
Looking at data from three tire tests, the Goodyear EfficientGrip Performance 2 was better during one wet handling [km/h] tests. On average the Goodyear EfficientGrip Performance 2 was 0.1% faster around a wet lap than the Michelin Primacy 4.
Best In Wet Handling [Km/H]: Goodyear EfficientGrip Performance 2
See how the Wet Handling winner was calculated >>
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:70.2Km/H | ✓ Michelin Primacy 4: 71Km/H |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:76.5Km/H | ✓ Michelin Primacy 4: 76.8Km/H |
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:74.3Km/H | Michelin Primacy 4: 73Km/H |
Looking at data from one tire tests, the Goodyear EfficientGrip Performance 2 was better during one subj. wet handling tests. On average the Goodyear EfficientGrip Performance 2 scored 6.52% more points than the Michelin Primacy 4.
Best In Subj. Wet Handling: Goodyear EfficientGrip Performance 2
See how the Subj. Wet Handling winner was calculated >>
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:9.2 Points | Michelin Primacy 4: 8.6 Points |
Looking at data from one tire tests, the Goodyear EfficientGrip Performance 2 was better during one wet circle tests. On average the Goodyear EfficientGrip Performance 2 had 6.63% higher lateral wet grip than the Michelin Primacy 4.
Best In Wet Circle: Goodyear EfficientGrip Performance 2
See how the Wet Circle winner was calculated >>
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:6.64m/s | Michelin Primacy 4: 6.2m/s |
Looking at data from nine tire tests, the Michelin Primacy 4 was better during seven straight aqua tests. On average the Michelin Primacy 4 floated at a 2.12% higher speed than the Goodyear EfficientGrip Performance 2.
Best In Straight Aqua: Michelin Primacy 4
See how the Straight Aqua winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
Goodyear EfficientGrip Performance 2:73Km/H | ✓ Michelin Primacy 4: 73.5Km/H |
2020 New 17 Inch Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:75Km/H | Michelin Primacy 4: 74.6Km/H |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:78.48Km/H | ✓ Michelin Primacy 4: 82.86Km/H |
2021 Sport Auto Summer Tire Test 195/55 R16 |
✓ Goodyear EfficientGrip Performance 2:81.5Km/H | Michelin Primacy 4: 78.2Km/H |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:80.1Km/H | ✓ Michelin Primacy 4: 83.2Km/H |
2021 ViBilagare Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:81.8Km/H | ✓ Michelin Primacy 4: 82.6Km/H |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:82.6Km/H | ✓ Michelin Primacy 4: 86.4Km/H |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:80.4Km/H | ✓ Michelin Primacy 4: 84.9Km/H |
2022 AZ SUV Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:74.7Km/H | ✓ Michelin Primacy 4: 76.6Km/H |
Looking at data from two tire tests, the Michelin Primacy 4 was better during one curved aquaplaning tests. On average the Michelin Primacy 4 slipped out at a 0.85% higher speed than the Goodyear EfficientGrip Performance 2.
Best In Curved Aquaplaning: Michelin Primacy 4
See how the Curved Aquaplaning winner was calculated >>
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:4.54m/sec2 | Michelin Primacy 4: 4.15m/sec2 |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:67.9m/sec2 | ✓ Michelin Primacy 4: 68.9m/sec2 |
Looking at data from three tire tests, the Michelin Primacy 4 was better during two subj. comfort tests. On average the Michelin Primacy 4 scored 6.18% more points than the Goodyear EfficientGrip Performance 2.
Best In Subj. Comfort: Michelin Primacy 4
See how the Subj. Comfort winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
Goodyear EfficientGrip Performance 2:9 Points | ✓ Michelin Primacy 4: 10 Points |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:9.4 Points | ✓ Michelin Primacy 4: 9.8 Points |
2021 ViBilagare Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:3 Points | Michelin Primacy 4: 3 Points |
Looking at data from one tire tests, the Goodyear EfficientGrip Performance 2 was better during one subj. noise tests. On average the Goodyear EfficientGrip Performance 2 scored 40% more points than the Michelin Primacy 4.
Best In Subj. Noise: Goodyear EfficientGrip Performance 2
See how the Subj. Noise winner was calculated >>
2021 ViBilagare Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:5 Points | Michelin Primacy 4: 3 Points |
Looking at data from five tire tests, the Goodyear EfficientGrip Performance 2 was better during two noise tests. On average the Goodyear EfficientGrip Performance 2 measured 0.11% quieter than the Michelin Primacy 4.
Best In Noise: Goodyear EfficientGrip Performance 2
See how the Noise winner was calculated >>
2020 New 17 Inch Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:70.7dB | Michelin Primacy 4: 71.9dB |
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:70dB | Michelin Primacy 4: 70dB |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
Goodyear EfficientGrip Performance 2:68.6dB | ✓ Michelin Primacy 4: 67.3dB |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:68.8dB | ✓ Michelin Primacy 4: 68.3dB |
2022 AZ SUV Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:70dB | Michelin Primacy 4: 71dB |
Looking at data from one tire tests, the Goodyear EfficientGrip Performance 2 was better during one noise tests. On average the Goodyear EfficientGrip Performance 2 measured 0.32% quieter than the Michelin Primacy 4.
Best In Noise: Goodyear EfficientGrip Performance 2
See how the Noise winner was calculated >>
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:61.4dB | Michelin Primacy 4: 61.6dB |
Looking at data from three tire tests, the Goodyear EfficientGrip Performance 2 was better during one tire weight tests. On average the Goodyear EfficientGrip Performance 2 weighed 1.71% less than the Michelin Primacy 4.
Best In Tire Weight: Goodyear EfficientGrip Performance 2
See how the Tire Weight winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
Goodyear EfficientGrip Performance 2:10Kg | ✓ Michelin Primacy 4: 9.6Kg |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:8.1Kg | Michelin Primacy 4: 8.94Kg |
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:7.76Kg | Michelin Primacy 4: 7.76Kg |
Looking at data from two tire tests, the Goodyear EfficientGrip Performance 2 was better during two wear tests. On average the Goodyear EfficientGrip Performance 2 is predicted to cover 10.27% miles before reaching 1.6mm than the Michelin Primacy 4.
Best In Wear: Goodyear EfficientGrip Performance 2
See how the Wear winner was calculated >>
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:47940KM | Michelin Primacy 4: 44200KM |
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:51340KM | Michelin Primacy 4: 44880KM |
Looking at data from two tire tests, the Goodyear EfficientGrip Performance 2 was better during two value tests. On average the Goodyear EfficientGrip Performance 2 proved to have a 18.55% better value based on price/1000km than the Michelin Primacy 4.
Best In Value: Goodyear EfficientGrip Performance 2
See how the Value winner was calculated >>
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:5.74Price/1000 | Michelin Primacy 4: 7.24Price/1000 |
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:10.42Price/1000 | Michelin Primacy 4: 12.59Price/1000 |
Looking at data from seven tire tests, the Goodyear EfficientGrip Performance 2 was better during seven price tests. On average the Goodyear EfficientGrip Performance 2 cost 12.1% less than the Michelin Primacy 4.
Best In Price: Goodyear EfficientGrip Performance 2
See how the Price winner was calculated >>
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:224 | Michelin Primacy 4: 267 |
2021 Sport Auto Summer Tire Test 195/55 R16 |
✓ Goodyear EfficientGrip Performance 2:83 | Michelin Primacy 4: 107 |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:275 | Michelin Primacy 4: 320 |
2021 ViBilagare Summer Tire Test 225/45 R17 |
✓ Goodyear EfficientGrip Performance 2:123.07 | Michelin Primacy 4: 142.81 |
2022 Auto Bild Summer Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:535 | Michelin Primacy 4: 565 |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:869 | Michelin Primacy 4: 1039 |
2022 AZ SUV Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:520 | Michelin Primacy 4: 550 |
Looking at data from eight tire tests, the Goodyear EfficientGrip Performance 2 was better during five rolling resistance tests. On average the Goodyear EfficientGrip Performance 2 had a 2.6% lower rolling resistance than the Michelin Primacy 4.
Best In Rolling Resistance: Goodyear EfficientGrip Performance 2
See how the Rolling Resistance winner was calculated >>
2020 Teknikens 17 Inch Summer Tire Test 225/50 R17 |
✓ Goodyear EfficientGrip Performance 2:5.5kg / t | Michelin Primacy 4: 5.56kg / t |
2020 New 17 Inch Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:7.6kg / t | ✓ Michelin Primacy 4: 7.4kg / t |
2020 Tire Reviews Ultimate Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:7.28kg / t | Michelin Primacy 4: 8.08kg / t |
2021 Sport Auto Summer Tire Test 195/55 R16 |
Goodyear EfficientGrip Performance 2:7.9kg / t | ✓ Michelin Primacy 4: 7.6kg / t |
2021 Auto Bild 16 Inch Summer Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:7.24kg / t | Michelin Primacy 4: 7.77kg / t |
2022 Auto Bild Summer Tire Test 215/55 R17 |
Goodyear EfficientGrip Performance 2:7.1kg / t | ✓ Michelin Primacy 4: 6.83kg / t |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:7.15kg / t | Michelin Primacy 4: 7.87kg / t |
2022 AZ SUV Tire Test 215/55 R17 |
✓ Goodyear EfficientGrip Performance 2:7.19kg / t | Michelin Primacy 4: 7.36kg / t |
Looking at data from two tire tests, the Goodyear EfficientGrip Performance 2 was better during one fuel consumption tests. On average the Goodyear EfficientGrip Performance 2 used 0.75% less fuel than the Michelin Primacy 4.
Best In Fuel Consumption: Goodyear EfficientGrip Performance 2
See how the Fuel Consumption winner was calculated >>
2021 ViBilagare Summer Tire Test 225/45 R17 |
Goodyear EfficientGrip Performance 2:5.44l/100km | ✓ Michelin Primacy 4: 5.37l/100km |
2022 ViBilagare Eco vs Normal Tire Test 205/55 R16 |
✓ Goodyear EfficientGrip Performance 2:5.14l/100km | Michelin Primacy 4: 5.29l/100km |
Tire Reviews also collects real world driver reviews for the Goodyear EfficientGrip Performance 2 and Michelin Primacy 4.
In total the Goodyear EfficientGrip Performance 2 has been reviewed 97 times and drivers have given the tire 86% overall.
The Michelin Primacy 4 has been reviewed 173 times and drivers have given the tire 78% overall.
This means in real world driving, people prefer the Michelin Primacy 4.
In conclusion the Goodyear EfficientGrip Performance 2 performed better in dry handling [s], dry handling [km/h], subj. dry handling, wet handling [s], wet handling [km/h], subj. wet handling, wet circle, subj. noise, noise, noise, tire weight, wear, value, price, rolling resistance and fuel consumption, while the Michelin Primacy 4 performed better in dry braking, wet braking, straight aqua, curved aquaplaning and subj. comfort.
Which tire is best for you depends a lot on your driving style and situation, plus what you want from the tire. Comparing all the data in the tire reviews database, on balance Goodyear EfficientGrip Performance 2 seems to be the best tire overall.
However, it's important to note that both tires have their strengths.
Remember, the best tire for you might depend on which of these factors are most important for your specific driving needs and conditions.
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.