Uffe Mohr has been wondering whether all-season tires might not play a role when drivers crash on the motorways from time to time.
I've been wondering a bit why there are so many accordion collisions on motorways in particular. Now I live in Odense and therefore hear daily about congestion especially on the motorway towards Middelfart (around Norre Åby).
Many things have been tried to solve it, and the motorway has been widened, etc. It has not helped very much.
The police often believe that the cards are too close and too fast. And that's probably true. Tire choice CAN play a role in that connection.
I have the idea that in recent years it has become very popular to ride on all-season tires. As you know, it is a mixed solution to NOT having to change to summer and winter tires respectively.
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I have followed various tests of these all-season tires and common to ALL brands is that the braking distance is significantly longer on an all-season tire. Even quite a lot. FDM has done several tests and the results are striking.
This applies to both tests on winter tires versus all-season tires and tests on summer tires versus all-season tires. Where a good winter tire would need 39 meters to slow down from 30 km/h on an icy road, the all-season tire would need between 44 and 48 meters.
Even worse was a situation with summer tires versus all-season tires. Here, a good summer tire had to use 37 meters to brake all the way down from 100 km/h to 0, whereas the test's worst all-season tire used a whopping 52 meters.
This means that where the car with summer tires was stationary, the car with the all-season tires still traveled 53 km/h. It is quite a lot and a lot if it explodes in the back of another car.
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Think how much society could save on the health system, the insurance companies, the emergency services as well as the police and ambulances if we could avoid these accidents. After all, it also costs the companies to have cars parked on the motorways with goods.
Could it be imagined that all the people who are too short on e.g. a real summer tire have forgotten or perhaps are unaware of the new braking distance in connection with the tire change to all-season tyres?
I myself have experienced having to brake quite hard. Here I was for my Bridgestone Potenza Sport. They did well.
In general, I would say that there is greater security by choosing the right tires for the season, and that you do not skimp on quality.
Uffe Mohr
Odense
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