American and Sweden specialists conducted researches and found out that autotyres are very dangerous part of car: because dust that occurs as a result of tyres wear may cause very serious diseases.

Thus, for instance, only in Sweden the emission makes more than 10 000 tones of tyre dust every year. In Los Angeles the emission is about 5 000 tones every year, though Los Angeles is considered to be ecologically clean city.  The amount of these dangerous emissions in the whole world makes more than 1 million tones. According to the most optimistic reckonings every day any citizen of Sweden inhales about 6 grams of tyre dust and American – 13 grams.

And for instance in Russia according to preliminary estimates of specialists this indicator may reach up to 20 grams for one person every day.

Thrown out or buried tyres decompose by natural conditions for a period not less than 100 years. And even if the tyres are not used all the same they emit definite amount of harmful chemical matters. There are about 15 harmful compounds of polyaromatic hydrocarbons and great number of noxious carcinogens accounted in tyres. Tyres also include 4 out of 12 types of N-nitrosamines. All the mentioned matters are included into the list of harmful toxins that is made by the International Agency for Research on Cancer and US Environmental Protection Agency. According to the estimates of this branch investigators the tyre dust includes much more carcinogenic substances than exhaust gases of automobile engines, which earlier considered to be the most important source of environmental pollution.

When the autotyres contact with rain precipitations and groundwaters the toxic organic compounds are washed-out: -1-(3-methylphenyl)-ethanol, azulene, benzothiazole, 2-methylbenzothiazole, N-(2,2- dimethylpropyl)-N-methylbenzamide, butylated hydroxytoluene, dyethylphthalate (possess expressed cumulative properties), 2-(methylthio)-benzothiazole, diphenylamine (3rd class of hazard), dybutilphthalate, phenanthrene.

Other groups of organic substances also shouldn’t be excluded, because different plasticizers and similar matters are used in different countries for tyres production. Nontoxic organic substances appear among them very rarely.

Tyres are high-molecular material that refers to thermosetting polymers that in contrast to thermoplastic ones can’t be recycled under high temperature. This makes very serious problems by wastes tyres recycling.