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Head-to-head Updated

Bridgestone Potenza RE050A Run Flat vs Dunlop SP Sport 01 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 146 + 897 owner reviews. How we score

SP Sport 01 is ahead, 58–45

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Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 46

    Dry

    SP Sport 01 +13
    59
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)≈ 54 (est.)≈ 62 (est.)
    Reviews found online3554

    Potenza RE050A Run Flat: 60% × 54.4 (est.) + 40% × 34.5 = 46

    SP Sport 01: 60% × 62.3 (est.) + 40% × 54.3 = 59

    No road tests of dry for Potenza RE050A Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for SP Sport 01. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 47

    Wet

    SP Sport 01 +10
    57
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)≈ 52 (est.)≈ 60 (est.)
    Reviews found online3953

    Potenza RE050A Run Flat: 60% × 52.4 (est.) + 40% × 38.7 = 47

    SP Sport 01: 60% × 60.3 (est.) + 40% × 52.8 = 57

    No road tests of wet for Potenza RE050A Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for SP Sport 01. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. –

    Snow

    No comparison
    49
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)–≈ 58 (est.)
    Reviews found online–35

    SP Sport 01: 60% × 58.3 (est.) + 40% × 35 = 49

    No road tests of snow for SP Sport 01. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 42

    Comfort

    SP Sport 01 +17
    59
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)≈ 60 (est.)≈ 66 (est.)
    Reviews found online1550

    Potenza RE050A Run Flat: 60% × 59.7 (est.) + 40% × 14.8 = 42

    SP Sport 01: 60% × 65.8 (est.) + 40% × 49.8 = 59

    No road tests of comfort for Potenza RE050A Run Flat or SP Sport 01. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. –

    Noise

    No comparison
    62
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)–≈ 67 (est.)
    Reviews found online–53

    SP Sport 01: 60% × 67.3 (est.) + 40% × 53 = 62

    No road tests of noise for SP Sport 01. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 48

    Treadwear

    SP Sport 01 +10
    58
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Professional tests (TWG score)≈ 56 (est.)≈ 62 (est.)
    Reviews found online3553

    Potenza RE050A Run Flat: 60% × 56.3 (est.) + 40% × 35.3 = 48

    SP Sport 01: 60% × 61.6 (est.) + 40% × 52.7 = 58

    No road tests of treadwear for Potenza RE050A Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

    No road tests of treadwear for SP Sport 01. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 29

    Handling (owners)

    SP Sport 01 +26
    55
    Why this score
    SourcePotenza RE050A Run FlatSP Sport 01
    Reviews found online2955
Scores at a glance
CategoryBridgestone Potenza RE050A Run FlatDunlop SP Sport 01
Relative Score 45 58
Dry 46 59
Wet 47 57
Snow – 49
Comfort 42 59
Noise – 62
Treadwear 48 58
Handling (owners) 29 55

Higher is better. The Relative Score follows your weights below; category scores do not change.

Weight the categories that matter to you

Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.

Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score

Potenza RE050A Run Flat

SP Sport 01

Only categories both tires have data for count toward the headline score.

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Potenza RE050A Run Flat

Pros

  • Strong grip and predictable handling in dry conditions
  • Precise steering response and high-speed cornering stability
  • Good overall longevity and mileage for certain drivers on smooth highways

Cons

  • Extremely harsh, rigid, and uncomfortable ride quality
  • Severe tramlining and tendency to follow ruts or road imperfections
  • Poor grip, reduced traction, and nervous handling in wet weather
All owner themes in the Potenza RE050A Run Flat review

Tire B SP Sport 01

Pros

  • Precise steering response and sharp turn-in
  • Good dry grip and cornering stability
  • Comfortable and relatively quiet ride when new

Cons

  • Noticeable increase in road noise and droning as the tire wears
  • Deteriorating wet weather traction and reduced grip once tread wears below 4mm
  • Rapid or uneven tread wear reported by some heavier vehicle owners
All owner themes in the SP Sport 01 review

Specs side by side

Attribute A · Bridgestone Potenza RE050A Run Flat B · Dunlop SP Sport 01
CategorySummerSummer
Vehicle type—Passenger Car / Crossover
UTQG—280 A A
Sidewall—Blackwall

Which one should you actually buy?

Bridgestone Potenza RE050A Run Flat

Dunlop SP Sport 01

Winner: Dunlop SP Sport 01 — better handling, comfort and dry. It leads or ties in every category we score.

Pick tire B You enjoy sharp, responsive handling

Dunlop SP Sport 01 scores 55 vs 29 on handling.

Pick tire B You want the most comfortable ride

Dunlop SP Sport 01 scores 59 vs 42 on comfort.

Pick tire B You want the most grip on dry roads

Dunlop SP Sport 01 scores 59 vs 46 on dry.

Pick tire B Your priority is wet-weather safety

Dunlop SP Sport 01 scores 57 vs 47 on wet.

Tire A · Bridgestone Potenza RE050A Run Flat
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Tire B · Dunlop SP Sport 01
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Potenza RE050A Run Flat or SP Sport 01?

Which is better in the wet, Potenza RE050A Run Flat or SP Sport 01?

Dunlop SP Sport 01, 57 vs 47 on our wet score.

Which grips better on dry roads, Potenza RE050A Run Flat or SP Sport 01?

Dunlop SP Sport 01, 59 vs 46 on our dry score.

Which is more comfortable, Potenza RE050A Run Flat or SP Sport 01?

Dunlop SP Sport 01, 59 vs 42 on our comfort score.

Which lasts longer, Potenza RE050A Run Flat or SP Sport 01?

Dunlop SP Sport 01, 58 vs 48 on our treadwear score.

How do we compare tires?

Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.

Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.

Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology