Kleber Dynaxer UHP vs GT Radial SportActive 2
In the 2 independent tests that ran both tyres, the GT Radial SportActive 2 finished ahead 2 times and the Dynaxer UHP not once. The Dynaxer UHP was stronger in comfort and value, the SportActive 2 in dry and wet.
Performance profile
9 measurements from the 2 shared tests, each tyre shown as its share of the better figure in every test.
Where each is furthest ahead
Dynaxer UHP
SportActive 2
Point at or tap any spoke for both tyres' figures.
In each test the better of the two figures counts as 100% and the other as its share of it, so a 36 m stop against 34.2 m is 95%; each spoke averages the shared tests that recorded it. The scale stops at 90%: a point further in sits on the hub's edge, hollow.
Where each scores higher
Dynaxer UHP
SportActive 2
Point at or tap any spoke for both tyres' figures.
Category scores are percentiles among tyres of the same season and class: 90 means this tyre out-performs 90% of them, measured across every test we hold, not only the ones it appeared in.
Where owners rate each higher
Dynaxer UHP
SportActive 2
Point at or tap any spoke for both tyres' figures.
Owners rate the Dynaxer UHP 80% from 7 reviews and the SportActive 2 87% from 8. Each spoke is one question owners answer out of 10; reviews are vetted by hand before publication.
Every measurement, side by side
Averages of the figures both tyres posted in the same tests. The gap is the average of each test's own gap, so figures from different cars and years are never mixed. Wins count the tests in which each tyre did better.
| Measurement | Dynaxer UHP | Gap | SportActive 2 | Wins |
|---|---|---|---|---|
| Dry SportActive 2 ahead | ||||
| Dry Braking m | 35.9 | = | 35.9 | 0-0 |
| Dry Handling km/h | 117.8 | 0.5% | 118.4 | 0-1 |
| Wet SportActive 2 ahead | ||||
| Wet Braking m | 35.85 | 2.3% | 35.05 | 0-2 |
| Wet Handling km/h | 72.2 | 2.9% | 74.3 | 0-1 |
| Straight Aqua km/h | 104.5 | 2.6% | 107.2 | 0-1 |
| Curved Aquaplaning m/sec2 | 3.23 | 20.1% | 3.88 | 0-1 |
| Comfort Dynaxer UHP ahead | ||||
| Noise dB | 71.9 | 1 dB | 72.9 | 1-0 |
| Value Dynaxer UHP ahead | ||||
| Wear km | 43,600 | 12.4% | 38,800 | 1-0 |
| Rolling Resistance kg / t | 7.65 | 8.1% | 8.32 | 1-0 |
Braking distances and lap times are better when lower; speeds, wear and grip figures when higher. A test's figures are its own: sizes, cars, surfaces and temperatures differ from one to the next, which is why the averages here are only ever of tests the two tyres shared.
Head to head in 2 tests in 2023
Each row is one published test in which both tyres ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | Dynaxer UHP | Field | SportActive 2 |
|---|---|---|---|
| 2023 AutoBild UHP Summer Tyre Test | P17 of 20 | P4 of 20 | |
| 2023 Summer Tyre Market Overview | P20 of 50 | P15 of 50 |
Dynaxer UHP vs SportActive 2: your questions
Is the Kleber Dynaxer UHP or the GT Radial SportActive 2 the better tyre?
In the 2 independent tests that ran both tyres, the GT Radial SportActive 2 finished ahead 2 times and the Dynaxer UHP not once. On the Tyre Reviews Score, which weighs every test and review we hold, the Dynaxer UHP scores 7.9 and the SportActive 2 8.3 out of 10.
Which is better in the wet, the Dynaxer UHP or the SportActive 2?
The SportActive 2 led 5 of the 5 wet measurements the shared tests recorded. On average it stopped 2.3% shorter in the wet across 2 tests.
Which is better in the dry?
The SportActive 2 led 1 of the 3 dry measurements the shared tests recorded.
Which is quieter and more comfortable?
Owners rate comfort 9.6/10 for the Dynaxer UHP and 8.9/10 for the SportActive 2.
What do owners say?
Owners rate the Dynaxer UHP 80% from 7 reviews and the SportActive 2 87% from 8. 71% of Dynaxer UHP owners would buy it again, against 88% for the SportActive 2.
Are they available in the same sizes?
The Dynaxer UHP is made in 30 sizes (17 to 20 inch) and the SportActive 2 in 57 (16 to 22 inch). 26 sizes are available in both. On the EU label the Dynaxer UHP is graded A for wet grip and C for rolling resistance in most sizes; the SportActive 2 A and D.
More comparisons with these tyres
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Your review is the part of this page no test can supply: how the tyre wore, how it aged, what it was like in the rain in year three. It takes about five minutes.
Where this data comes from
Finishing positions and measurements are transcribed from each published test. A test only counts here when both tyres ran in it, so every figure was recorded on the same car, size and day as the one it is compared to.
About the TR Score
The Tyre Reviews Score rates each tyre out of 10 from every independent test result and vetted owner review we hold, so two tyres can be compared even before a test has run them together.
Who does the testing
Every test published as a Tyre Reviews test is run by Jonathan Benson, who has been testing tyres independently since 2007.