Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 2 road tests and 300 + 411 owner reviews. How we score
SP Sport Maxx TT leads, 64–60 Narrow edge
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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 59 · 2 tests Owners 61 · 411 reviews
Best test result: #1 of 22 in 2022 Consumer Reports Ultra High Performance Summer Tires (tested tread life (miles))
“Update! I ended up going with the Nitto NT555 G2’s, thanks for all the suggestions. They are amazing tires! They ride smooth for an ultra performance, the price was friendly, and they grip extremely well!”
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | SP Sport Maxx TT | NT555 G2 |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 66 (est.) | 49 |
| Reviews found online | 65 | 67 |
SP Sport Maxx TT: 60% × 66.5 (est.) + 40% × 64.6 = 66
NT555 G2: 60% × 49.4 + 40% × 67.2 = 56
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 | NT555 G2 |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 67 (est.) | 48 |
| Reviews found online | 64 | 59 |
SP Sport Maxx TT: 60% × 66.6 (est.) + 40% × 64 = 66
NT555 G2: 60% × 47.7 + 40% × 59 = 52
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 | NT555 G2 |
|---|---|---|
| Professional tests (TWG score) | – | ≈ 57 (est.) |
| Reviews found online | – | 32 |
NT555 G2: 60% × 57.4 (est.) + 40% × 32 = 47
No road tests of snow for NT555 G2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).
| Source | SP Sport Maxx TT | NT555 G2 |
|---|---|---|
| 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
NT555 G2: 60% × 68.7 (est.) + 40% × 66.7 = 68
No road tests of comfort for SP Sport Maxx TT or NT555 G2. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | SP Sport Maxx TT | NT555 G2 |
|---|---|---|
| Professional tests (TWG score) | – | ≈ 67 (est.) |
| Reviews found online | – | 66 |
NT555 G2: 60% × 67.3 (est.) + 40% × 65.9 = 67
No road tests of noise for NT555 G2. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
| Source | SP Sport Maxx TT | NT555 G2 |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 62 (est.) | 81 |
| Reviews found online | 53 | 67 |
SP Sport Maxx TT: 60% × 61.8 (est.) + 40% × 53.2 = 58
NT555 G2: 60% × 80.5 + 40% × 66.9 = 75
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 | NT555 G2 |
|---|---|---|
| Reviews found online | 61 | 67 |
| Category | Dunlop SP Sport Maxx TT | Nitto NT555 G2 |
|---|---|---|
| Relative Score | 64 | 60 |
| Dry | 66 | 56 |
| Wet | 66 | 52 |
| Snow | – | 47 |
| Comfort | 61 | 68 |
| Noise | – | 67 |
| Treadwear | 58 | 75 |
| Handling (owners) | 61 | 67 |
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.
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
SP Sport Maxx TT
NT555 G2
Only categories both tires have data for count toward the headline score.
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 | NT555 G2 | 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 | #10/10 2025 Tire Rack UUHP 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
Community sentiment regarding the Nitto NT555 G2 is divided, with many owners appreciating its affordable price point, quiet street ride, good tread life, and availability in hard-to-find wide sizes. However, numerous drivers express frustration over poor straight-line traction on higher-horsepower vehicles, significant loss of grip in cold temperatures, and dangerous handling or hydroplaning in wet weather. Additionally, several users report persistent issues with flat-spotting when vehicles are parked for extended periods.
“NT555G2 are lower end performance tires. They are not even in the same class as the PSS4S you mention. If you have the money buy the Michelin PSS4s’. Also go wider in the front and rear for better traction and honestly better looks. I run Nitto NT05’s in 275/305/35R19. They are 100% stickier than the 555G2’s and on a warm day the PSS4s’ too that came with my car But that’s the point of them and the rain performance doing the actual speed limit and taking it easy in the rain fine. I have about 530 to the crank and 460 to the wheels. They will not last as long as the 555G2’s but they perform better. When it comes to pure all around best street tire though, the answer is easy the Michelin’s you mentioned are the best if you have the extra money to spend. Get a 275/295/35R19 set up since the profile of the 305 in that tire is too small at just 30 in my opinion. You’ll be very happy with those. Or get the Nitto Nt05 but expect to replace the tires every 10-15k miles depending on how rough you are on them.”
“Finally got new tires on, NT555 G2s”
“Finally slapped on the widened steelies with 285/40/17 Nittos NT555 G2.”
Based on 84 community posts
| Attribute | A · Dunlop SP Sport Maxx TT | B · Nitto NT555 G2 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 5 | 88 |
| Rim diameters | 16″ – 18″ | 15″ – 22″ |
| Tread depth | — | 10.2/32″ |
| UTQG | — | 320 A A |
| Sidewall | — | Blackwall |
| Max pressure | — | 50 psi |
| Sizes in common | 2 | 2 |
Dunlop SP Sport Maxx TT
Nitto NT555 G2
Narrow edge: Dunlop SP Sport Maxx TT — better wet and dry. Pick the Nitto NT555 G2 if treadwear, comfort and handling matter most to you.
Nitto NT555 G2 scores 75 vs 58 on treadwear.
Dunlop SP Sport Maxx TT scores 66 vs 52 on wet.
Dunlop SP Sport Maxx TT scores 66 vs 56 on dry.
Nitto NT555 G2 scores 68 vs 61 on comfort.
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Dunlop SP Sport Maxx TT, 66 vs 52 on our wet score.
Dunlop SP Sport Maxx TT, 66 vs 56 on our dry score.
Nitto NT555 G2, 68 vs 61 on our comfort score.
Nitto NT555 G2, 75 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
