Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 4 road tests and 300 + 17 owner reviews. How we score
Too close to call: SP Sport Maxx TT 64, Altimax One S 65.
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Tests – · none yet Owners 60 · 300 reviews
“I have the Maxx TT on my car for about 1000 Km which included two slalom sessions. I am very pleased with the ride quality and dry traction. It is much quieter than the OEM tires. I have not had a chance to drive in wet road yet.”
Tests 60 · 4 tests Owners 71 · 17 reviews
Best test result: #16 of 50 in 2023 ADAC Summer Tyre Test (wear)
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | SP Sport Maxx TT | Altimax One S |
|---|---|---|
| Professional tests (TWG score) · – / 4 tests | ≈ 66 (est.) | 50 |
| Reviews found online | 65 | 72 |
SP Sport Maxx TT: 60% × 66.5 (est.) + 40% × 64.6 = 66
Altimax One S: 60% × 50.4 + 40% × 72.3 = 59
No road tests of dry for SP Sport Maxx TT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
| Source | SP Sport Maxx TT | Altimax One S |
|---|---|---|
| Professional tests (TWG score) · – / 4 tests | ≈ 67 (est.) | 59 |
| Reviews found online | 64 | 72 |
SP Sport Maxx TT: 60% × 66.6 (est.) + 40% × 64 = 66
Altimax One S: 60% × 59.3 + 40% × 72.1 = 64
No road tests of wet for SP Sport Maxx TT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
| Source | SP Sport Maxx TT | Altimax One S |
|---|---|---|
| Professional tests (TWG score) | ≈ 66 (est.) | ≈ 69 (est.) |
| Reviews found online | 53 | 67 |
SP Sport Maxx TT: 60% × 66.4 (est.) + 40% × 53.3 = 61
Altimax One S: 60% × 68.8 (est.) + 40% × 67.3 = 68
No road tests of comfort for SP Sport Maxx TT or Altimax One S. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | SP Sport Maxx TT | Altimax One S |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 62 (est.) | 72 |
| Reviews found online | 53 | 71 |
SP Sport Maxx TT: 60% × 61.8 (est.) + 40% × 53.2 = 58
Altimax One S: 60% × 71.6 + 40% × 71.2 = 71
No road tests of treadwear for SP Sport Maxx TT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
| Source | SP Sport Maxx TT | Altimax One S |
|---|---|---|
| Reviews found online | 61 | 70 |
| Category | Dunlop SP Sport Maxx TT | General Altimax One S |
|---|---|---|
| Relative Score | 64 | 65 |
| Dry | 66 | 59 |
| Wet | 66 | 64 |
| Comfort | 61 | 68 |
| Treadwear | 58 | 71 |
| Handling (owners) | 61 | 70 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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.
SP Sport Maxx TT
Altimax One S
Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.
| Discipline | Category | SP Sport Maxx TT | Altimax One S | Δ | Head-to-head |
|---|---|---|---|---|---|
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #3/14 2011 Auto Zeitung Max Performance Tyre Test | #28/50 2023 ADAC Summer Tyre Test | – | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
From Reddit, forums and review threads. Not part of our score
Community members generally praise the Dunlop SP Sport Maxx TT for its quiet road manners, respectable dry and wet grip, and solid track and cold-weather road performance compared to stock competition-oriented tires. Some drivers note relatively soft sidewalls during aggressive slalom events on heavier vehicles or limited grip before coming up to temperature. Overall, drivers find it to be a capable, comfortable summer tire that balances performance and daily drivability.
“We have these tires on my 18 Grand Sport and my wife’s 17 Z51 Convertible driving in Ohio. Very pleased with these tires! Probably should be OEM for these cars. Handle very well. Doesn’t throw gravel up on the cars like stock tires. Cold weather grip is very good! Stock MPSS are scary below 50 degrees. We have had good success with Discount Tire for purchase and install.”
“In Hong Kong, if your style is aggresive, sport maxx is not enough, i am using AD08 and RE11 is not bad”
“After 3 sessions of autoslalom, I can say that the sidewall is too soft for this heavy car. I have the front tires set at 39 psi cool. I may try higher pressure next time to see if it can reduce the tire roll and maintain traction. In term of day to day driving, this is a great quiet summer tire. It performs well in wet too.”
Based on 19 community posts
We haven't collected enough community discussion about this tire yet.
| Attribute | A · Dunlop SP Sport Maxx TT | B · General Altimax One S |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 5 | 81 |
| Rim diameters | 16″ – 18″ | 15″ – 20″ |
| Sizes in common | 3 | 3 |
Dunlop SP Sport Maxx TT
General Altimax One S
Too close to call: Dunlop SP Sport Maxx TT and General Altimax One S are within 2 points overall. Dunlop SP Sport Maxx TT is stronger on dry. General Altimax One S is stronger on treadwear, handling and comfort.
General Altimax One S scores 71 vs 58 on treadwear.
General Altimax One S scores 70 vs 61 on handling.
Dunlop SP Sport Maxx TT scores 66 vs 59 on dry.
General Altimax One S scores 68 vs 61 on comfort.
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Neither, by our numbers: 66 vs 64 on the wet score, within 3 points.
Dunlop SP Sport Maxx TT, 66 vs 59 on our dry score.
General Altimax One S, 68 vs 61 on our comfort score.
General Altimax One S, 71 vs 58 on our treadwear score.
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
