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Dunlop SP Sport Maxx ROF looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Dunlop Grandtrek AT20 vs Dunlop SP Sport Maxx ROF — 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 57 + 10 owner reviews. How we score

SP Sport Maxx ROF is ahead, 55–45

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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. 43

    Dry

    SP Sport Maxx ROF +14
    57
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 52 (est.)≈ 61 (est.)
    Reviews found online2952

    Grandtrek AT20: 60% × 52.2 (est.) + 40% × 29.2 = 43

    SP Sport Maxx ROF: 60% × 61.3 (est.) + 40% × 51.7 = 57

    No road tests of dry for Grandtrek AT20. 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 Maxx ROF. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 43

    Wet

    SP Sport Maxx ROF +17
    60
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 50 (est.)≈ 62 (est.)
    Reviews found online3456

    Grandtrek AT20: 60% × 49.6 (est.) + 40% × 33.7 = 43

    SP Sport Maxx ROF: 60% × 62.3 (est.) + 40% × 56.4 = 60

    No road tests of wet for Grandtrek AT20. 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 Maxx ROF. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 49

    Snow

    No comparison
    –
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 58 (est.)–
    Reviews found online35–

    Grandtrek AT20: 60% × 58.3 (est.) + 40% × 34.8 = 49

    No road tests of snow for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 51

    Comfort

    SP Sport Maxx ROF +7
    58
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 63 (est.)≈ 65 (est.)
    Reviews found online3348

    Grandtrek AT20: 60% × 62.9 (est.) + 40% × 33.1 = 51

    SP Sport Maxx ROF: 60% × 65.5 (est.) + 40% × 48 = 58

    No road tests of comfort for Grandtrek AT20 or SP Sport Maxx ROF. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 57

    Noise

    No comparison
    –
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online43–

    Grandtrek AT20: 60% × 67.3 (est.) + 40% × 42.6 = 57

    No road tests of noise for Grandtrek AT20. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 52

    Treadwear

    Grandtrek AT20 +6
    46
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Professional tests (TWG score)≈ 58 (est.)≈ 55 (est.)
    Reviews found online4233

    Grandtrek AT20: 60% × 58.3 (est.) + 40% × 41.7 = 52

    SP Sport Maxx ROF: 60% × 55.5 (est.) + 40% × 32.7 = 46

    No road tests of treadwear for Grandtrek AT20. 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 Maxx ROF. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 34

    Handling (owners)

    SP Sport Maxx ROF +13
    47
    Why this score
    SourceGrandtrek AT20SP Sport Maxx ROF
    Reviews found online3447
Scores at a glance
CategoryDunlop Grandtrek AT20Dunlop SP Sport Maxx ROF
Relative Score 45 55
Dry 43 57
Wet 43 60
Snow 49 –
Comfort 51 58
Noise 57 –
Treadwear 52 46
Handling (owners) 34 47

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

Grandtrek AT20

SP Sport Maxx ROF

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 Grandtrek AT20

Pros

  • Exceptional tread life and high mileage capability (often exceeding 40,000 to 60,000+ miles)
  • Comfortable, smooth, and quiet ride on tarmac and highways
  • Good stability and predictable handling in dry, warm weather conditions

Cons

  • Extremely poor and potentially unsafe traction on wet roads, leading to sliding and long braking distances
  • Unreliable or hazardous performance in winter conditions like snow and ice
  • Subpar off-road capabilities, including low puncture resistance on gravel and poor traction in mud or sand
All owner themes in the Grandtrek AT20 review

Tire B SP Sport Maxx ROF

Pros

  • Good everyday highway stability and handling
  • Low road noise levels
  • Aggressive and appealing aesthetic on large wheel sizes (e.g., 20-inch)

Cons

  • Significantly fast and disappointing tread wear mileage
  • Poor grip and confidence in wet weather conditions
  • High replacement costs typical of run-flat tires
All owner themes in the SP Sport Maxx ROF review

Specs side by side

Attribute A · Dunlop Grandtrek AT20 B · Dunlop SP Sport Maxx ROF
CategoryAll-Terrain tireSummer
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available9—
Rim diameters15″ – 18″—
SidewallBlackwall—

Which one should you actually buy?

Dunlop Grandtrek AT20

Dunlop SP Sport Maxx ROF

Winner: Dunlop SP Sport Maxx ROF — better wet, dry and handling. Pick the Dunlop Grandtrek AT20 if treadwear matters most to you. Dunlop SP Sport Maxx ROF rests on little evidence so far (0 tests, 10 reviews), so read this result as provisional.

Pick tire B Your priority is wet-weather safety

Dunlop SP Sport Maxx ROF scores 60 vs 43 on wet.

Pick tire B You want the most grip on dry roads

Dunlop SP Sport Maxx ROF scores 57 vs 43 on dry.

Pick tire B You enjoy sharp, responsive handling

Dunlop SP Sport Maxx ROF scores 47 vs 34 on handling.

Pick tire B You want the most comfortable ride

Dunlop SP Sport Maxx ROF scores 58 vs 51 on comfort.

Tire A · Dunlop Grandtrek AT20
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Tire B · Dunlop SP Sport Maxx ROF
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Grandtrek AT20 or SP Sport Maxx ROF?

Which is better in the wet, Grandtrek AT20 or SP Sport Maxx ROF?

Dunlop SP Sport Maxx ROF, 60 vs 43 on our wet score.

Which grips better on dry roads, Grandtrek AT20 or SP Sport Maxx ROF?

Dunlop SP Sport Maxx ROF, 57 vs 43 on our dry score.

Which is more comfortable, Grandtrek AT20 or SP Sport Maxx ROF?

Dunlop SP Sport Maxx ROF, 58 vs 51 on our comfort score.

Which lasts longer, Grandtrek AT20 or SP Sport Maxx ROF?

Dunlop Grandtrek AT20, 52 vs 46 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