Why drivers the Soviet Union were able to ride on the same tires in winter and summer?

Just in school physics teaching, and not just visited it!\r\n\r\poditeli were divided into Amateurs and professionals.\r\n\r\lubiteli most often in the winter, the car did not use, actually where you want to go?\r\n\r\PPA bribe (money), it was not possible to undergo training and pass the exam as it is now.\r\n\r\medkomissiya was not the same as it is now, anyone can get help...for the money.\r\n\r\tehnicheskoe condition of the vehicle, was several orders of magnitude better than it is now...\r\n\r\nbut most importantly of all abide by the rules, regardless of your experience and the brand automobile!\r\n\r\nhttps://www.youtube.com/watch?v=8Y8ltYeCn1w&frags=pl%2Cwn\r\n\r\n\r\n\r\sobliudenii traffic rules and respect for other road users - the key to safe riding!!!\r\n\r\nhttps://www.youtube.com/watch?v=_tft2Ju6yA4&frags=pl%2Cwn\r\n\r\n\r\n\r\PPO second link, a lot of "examples" that in physics, technical condition of cars, not respecting traffic rules, and the name of the collection says a lot....)))
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