What to do if a flat tire and no spare wheel? When using no place to wait, how much you can stretch out flat on the wheel? Or should immediately stop?
Today is not lucky rear right wheel of our "Priora". At the disposal of its driver intercom and two fire extinguishers. Observation post equipped in another car, its crew - the driver, photographer and chronicler of the operator that supports radio communications with "Priora".
Fifty kilometers at a speed of 90 km / h - Desktop warm tires and the car "pierce" doomed wheel. The clock shows 10:29, the odometer - the zeros.
10:29.38. "Normal flight!" Preset speed - 40 km / h. The first pictures capture the state of run-flat tires: in the zone of contact with the road the sidewalls formed in half. Bus is a mild hum. The driver shares his impressions: "" shakes the steering wheel, pedal vibrate and gears, slightly singing instrument panel and door trim. The machine goes smoothly, from the planned trajectory is not trying to deviate ".
10:32.30. Nothing happens, and because three minutes seem like an eternity. Recall test "ranfletov" held some time ago: the weakest bus exposed ply cords through 167, and the most persistent - after 566 miles. I wonder whether we survive at least a couple of tens of kilometers away? Infrared thermometer shows the temperature of "empty" tires - plus 41 degrees, that is working well. And reserve it until exhausted. Ask the driver to add speed and tell us about the behavior of the car.
10:34.30. 60 km / h. Roar grew louder. Driver reports: "vibration force. Any encroachments on the care side. " The temperature of rubber has risen to 53 degrees.
10:36.05. Bus heated to 68 degrees, although on the street just plus-two. Give the command to return to the previous rate.
10:38.02. Speed ??40 km / h, the temperature rose to 87 degrees. In the dying noise is heard tires crunching breaking a steel skeleton, appeared light smoke. The driver confirms the metallic nature of the noise.
10:39.52. Rubber cooled to 74 degrees. Bus rumbles, as if the asphalt rolling bucket of bolts. The smoke grew stronger, although the road is not veiled - diesel trucks sometimes chadyat stronger.
10:40.54. "The deceased" gradually cools down - up to 68 degrees, the smoke is reduced, "bucket" is rolling more muffled. On the sidewall of tires rose floating in a circle bubble.
10:43.18. On the radio we hear: "The car began to scour, new knock, as if chunks of tires slapping on a body."
10:45.12. Ripple on the bus has completely disappeared, but there diametral gap - the gap has started the tread. At times, via the through holes in the sidewalls can see the central part of the rim.
10:48.20. Wheel with knackered bus starts to jump, if the machine is on a washboard. The amplitude of the jumps increases, flying lumps of rubber. The driver reports that "Rides like a horse". Lamp lights up, signaling a malfunction ABS.
10:51.03. Hard blows to the body. From the car flies off a piece of the rear apron, and from the tires - large pieces of rubber.
10:53.12. To arch the body appear dark drops of liquid tar. Audible crunch outbreak Fender.
10:53.38. Remains locker fly on the road.
10:54.24. Finally, of the tire tread come off - total destruction. Rim with the remnants of rubber asphalt concerns. Whoa, come!
Bus in our experiment lasted less than an hour. During this time, managed to drive off from the place of "punch" ... only 17 kilometers 100 meters.
Very far to go to run-flat wheel does not work, but small enough mileage to get some information first hand. During these difficult 17 km car got tight.
Loss of "dead" - torn locker, torn apron, parking brake cable sheath is damaged, "wounded" - crumble a piece of the rear bumper from the wheel to turn out a parking brake cable bracket to the back of the gully, with his inner flange arches and elements of the threshold at its end, anticorrosive mastic places rubbed to the metal. In addition, there is rubbing on the lever beams, bumpers and fuel tank filler pipe. Well, that remained intact brake pipes and wires leading to sensor ABS.
With increasing load, speed, air temperature and asphalt, in the presence of rotations "killer" mileage will only shrink. Especially dangerous are ripped to shreds in front of the tire: there near the brake hoses and a swing where the tread coming off - the volume under the front wing more than the rear. Then do not do without the body work.
We went to "empty" bus for more than 17 miles - think about it, if the wheel will strike the middle of the road as you move into another dangerous situation.
References
To go on a run-flat wheels can be! There are situations that allow lossless fail, but it is actually do a little blood. Keep the minimum possible speed and not spin the wheel unnecessarily. Remember that the pieces of the tread can damage the car - be careful.
It is always possible, breaking wheel, to move to replace him on the sidelines, not venturing near the axial repairs. Chewed the bus still did not help, but will work in relative safety. If the bus more suitable, then 20-30 meters at low speed will overcome without major consequences.
And so you do not have to repeat our experiment, check the spare tire, tools and a compressor (pump).
