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different. I want to add this information to my logbook, which has survived. On
the Internet, I found an article about AT rubber. Find more here: cooper adventurer h/t review
In the SUV tire segment, there are currently mainly three variants on offer. Highway Terrain (HT) tires have a higher speed rating, good grip on asphalt (both dry and wet), but provide less traction in off-road conditions. Its sides are also more prone to damage due to contact with stones and other sharp objects.
At the other end of the scale are Mud Terrain (MT) tires. These tires are designed for the most severe off-road applications that require maximum grip in mud and sand, as well as suitable sidewalls that are not afraid of punctures, especially at low pressure levels. Either way, its aggressive tread pattern reduces grip on the asphalt and increases noise, vibration and roughness to the point that you can go crazy after driving 2,000 km on the asphalt.
The compromise between these two types of tires is - in theory - All Terrain (AT) tires. However, in this segment there are also many different models, which are intended more for off-road or vice versa.
To ensure reproducible results, control tires were needed. The driver regularly ran on these tires to assess whether conditions changed - track conditions, temperature, etc. - during testing. For this, Goodyear Wrangler HP All-Weather tires in size 265/65 R17 were chosen. The tests used a Toyota Hilux developing 120 hp. at 343 Nm of torque.
How the tests were conducted
Traction effort in the sand
For these tests, a team of experts went to the Kalahari Mountain View off-road track, near the Whitsand Wildlife Refuge in the Northern Cape Province. Although the Kalahari experienced record-breaking torrential rains on the eve of its arrival, the dunes were relatively dry and the sand was ideal for testing.
The rides started on a slight slope of hard sand, which means that this is the base of the dune. Thus, the same starting speed was guaranteed. The idea was that if the initial speed were identical - and small - it would be possible to determine exactly how much traction a given tire would provide.
The tests were performed with a downshift engaged and a rear differential activated. With these settings, the default ESC and traction control are disabled. The lever was placed in first gear and the accelerator pedal was pressed to the ground since the start of the test.
The test ended when the car stopped. After each run, the track was leveled with a rake and the Hilux passed through it once to compact the sand to the required level. The distance, like all indicators in the rest of the tests, was determined using the VBOX satellite system.
Wet handling
This test was carried out at the Gerotec Testing Facility, west of Pretoria. There is a wet test track with a water spray system at the test site, which maintains an equal layer of liquid on the track. They included an overdrive and standard rear-wheel drive, since the average driver will likely choose these settings in the rain. All electronic driver assistance systems , however, have been turned off, as in all other tests. The pilot took three laps, and the classification took into account the two fastest laps - the same principle was used in the future.
Braking on wet asphalt
The settings remained the same, although the standard ABS systemwas. There were three races with maximum braking from a speed of 60 km / h to a complete stop. The two best scores were used to obtain the average.
Handling on dry asphalt
The methodology has remained the same as the wet handling test, although the irrigation system has been turned off naturally.