TopTire Review

    CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    2026 test data · 10 independent tests · 2 head-to-head

    → See full CST vs Yokohama brand comparison

    CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21: the full picture

    This comparison is built only from published independent tests — no manufacturer claims and no sponsored reviews. Between them, the CST Medallion All Season ACP1 and Yokohama BluEarth 4S AW21 appear in 10 tests, 2 of which put both tires on the same track on the same day. Head-to-head results carry the most weight here, because surface, weather and test car all change between events and make raw numbers from different tests hard to compare directly.

    How the CST Medallion All Season ACP1 performs. It takes the win in mileage. Its overall Tire Lab Score is 81/100, based on 5 tests.

    How the Yokohama BluEarth 4S AW21 performs. It takes the win in wet, dry, snow, ice, noise / comfort, efficiency. Its overall Tire Lab Score is 87/100, based on 5 tests.

    What this means for you. Category wins matter more than the overall score when your driving is weighted toward one condition — a wet-climate commuter should follow the wet braking column, while a high-mileage driver should follow wear and rolling resistance. Also check that both tires are actually offered in your size and load rating: performance can shift between sizes, and availability differs between the European and North American markets.

    Verdict

    The Yokohama BluEarth 4S AW21 is the stronger all-round choice, leading in wet and Tire Lab Score. The CST Medallion All Season ACP1 still wins on mileage, making it the right pick if that matters most to you.

    Which one should you buy?

    Choose CST Medallion All Season ACP1 if

    • You prioritise mileage

    Choose Yokohama BluEarth 4S AW21 if

    Overall winner
    • You prioritise wet
    • You prioritise dry
    • You prioritise snow

    Test profile

    MetricCST Medallion All Season ACP1Yokohama BluEarth 4S AW21
    SegmentTouringTouring
    TypeAll SeasonAll Season
    Tests used55
    Best rank#2#1
    Avg rank16.59.8
    Latest test20252024
    Tire Lab Score81.187

    Tire Lab Score

    81.1
    Very Good · All Season
    87
    Very Good · All Season

    Performance overview

    Category-by-category results

    CategoryCST Medallion All Season ACP1Yokohama BluEarth 4S AW21Winner
    💧Wet
    Avg rank 16.3
    1
    Avg rank 10.5
    2
    Yokohama BluEarth 4S AW21
    ☀️Dry
    Avg rank 24.4
    Avg rank 12.7
    1
    Yokohama BluEarth 4S AW21
    ❄️Snow
    Avg rank 14.0
    Avg rank 5.0
    12
    Yokohama BluEarth 4S AW21
    🧊Ice
    Avg rank 16.0
    Avg rank 8.0
    1
    Yokohama BluEarth 4S AW21
    🔇Noise / Comfort
    Avg rank 8.5
    1
    Avg rank 5.4
    21
    Yokohama BluEarth 4S AW21
    📏Mileage
    Avg rank 5.0
    Avg rank 6.7
    1
    CST Medallion All Season ACP1
    🔋Efficiency
    Avg rank 5.0
    Avg rank 1.0
    2
    Yokohama BluEarth 4S AW21

    Tests used in this comparison

    Both tires were measured head-to-head in these 2 independent tests:

    💧 Wet: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 10.5, compared to 16.3 for the CST Medallion All Season ACP1.

    ☀️ Dry: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 12.7, compared to 24.4 for the CST Medallion All Season ACP1.

    ❄️ Snow: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 5.0, compared to 14.0 for the CST Medallion All Season ACP1.

    🧊 Ice: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 8.0, compared to 16.0 for the CST Medallion All Season ACP1.

    🔇 Noise / Comfort: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 5.4, compared to 8.5 for the CST Medallion All Season ACP1.

    📏 Mileage: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The CST Medallion All Season ACP1 wins this category with an average rank of 5.0, compared to 6.7 for the Yokohama BluEarth 4S AW21.

    🔋 Efficiency: CST Medallion All Season ACP1 vs Yokohama BluEarth 4S AW21

    The Yokohama BluEarth 4S AW21 wins this category with an average rank of 1.0, compared to 5.0 for the CST Medallion All Season ACP1.

    Frequently asked questions

    Which is better in the wet, CST Medallion All Season ACP1 or Yokohama BluEarth 4S AW21?

    Across independent wet-braking tests, the Yokohama BluEarth 4S AW21 ranks higher on average than the CST Medallion All Season ACP1.

    Which has shorter dry braking distance?

    The Yokohama BluEarth 4S AW21 averages a better dry-braking rank than the CST Medallion All Season ACP1 across the tests where both appeared.

    Which tire is quieter and more comfortable?

    On combined noise and comfort metrics, the Yokohama BluEarth 4S AW21 ranks better than the CST Medallion All Season ACP1.

    Which tire lasts longer?

    Based on wear and abrasion testing, the CST Medallion All Season ACP1 shows better mileage performance than the Yokohama BluEarth 4S AW21.

    How many tests were used in this comparison?

    CST Medallion All Season ACP1 appears in 5 independent tests, Yokohama BluEarth 4S AW21 in 5, with 2 head-to-head tests where both were measured.

    Also compare

    Data aggregated from independent testing organizations including ADAC, Auto Bild, TCS, and Auto Motor und Sport. Read our methodology →