Vehicle tires use over time, that much is clear. But how dangerous is the tire abrasion and what are the harmful consequences for our environment? The ADAC has dealt with this problem in detail and says which tire manufacturers are on the right track and which still have some catching up to do. In the video you can see the test winners of the ADAC winter tire test.
Tires are undoubtedly one of the main wear parts of a vehicle. How serious the environmental impact is actually, but only a few vehicle owners should really be clear. Depending on the type and brand, a set of modern car tires leaves up to 175 grams of rubber or. Plastic residues per 1.000 kilometers, as the ADAC now found in a current study (advertisement) on the subject. So that’s almost 0.2 grams per kilometer. In truck tires, this balance looks even worse. Here, up to 1.7 grams per kilometer can literally fall by the wayside.
All of this abrasion falls under the section plastic waste and here under the term microplastics. Exactly these microplastic emissions are a serious problem on both land and in the sea. According to current surveys, up to 500 in the EU falls annually.000 tons of tires. In Germany alone, the abrasion of car tires accounts for about a third of all microplastic emissions. The ADAC examined the abrasion of different tire models of different sizes and found significant differences from the manufacturers.
How dangerous is tire abrasion and how does it arise?
From the abrasion, i.e. the resulting particles directly, there is no acute danger for us humans. Only a very small part of this particle remains in the atmosphere over a longer period of time and is taken through the breathing. In addition, the particles are quite rough compared to other fine dust particles with 2.5 to 10 μm (micrometer) and cannot penetrate deeply into the airways.
The main part of the abrasion remains on the streets or in the vicinity of the traffic routes. From there it is largely removed from rainfall and ends up in the sewers or seeped into the ground. Waters and floors are undoubtedly burdened by this. By the way: Particularly high abrasion not only create comparatively heavy vehicles, trips in mountainous regions or a sporty driving style at a higher pace. Even wet lanes or concrete instead of asphalt as a lane covering can lead to significantly higher abrasion.
The abrasion arises from friction, more precisely the contact between the road surface and tires and the forces occurring there. But it is not only made of plastic or rubber. The abrasion also includes leafest, earth, sand, wood, etc. All sorts of substances that can occur on lanes. In English, this abrasion is aptly referred to with "TRWP" (Tyre and Road Wear Particles).
How exactly is the abrasion measured?
The ADAC has developed procedures for years both in real operation and in the laboratory to record these emissions precisely. The results determined in real trips flow into the evaluations as well as the results of special role test benches on which tires can be driven up to the wear limit. The actual mileage is influenced on the one hand by the abrasion and the second by the depth of the profile, it is said.
In short, the higher the profile, the longer the mileage. But that does not mean that a tire with a high profile is also more environmentally friendly. If you want to determine the environmental friendliness of a tire, weight loss over the service life plays a role and not the profile depth. For the current study, the ADAC has now evaluated some ripening tests of the past few years (2016 to 2021). To determine wear in real operation, over 15.000 kilometers per tire type covered, see also the video above.
More on the subject:
Read car tires correctly: that means the numbers and abbreviations
Sports tires are more environmentally harmful than other tire types!
The average abrasion of a vehicle for all four tires is around 120 grams per 1.000 kilometers. Interesting: The detailed tests of the ADAC could not find any significant differences in the tire abrasion between the different seasonal tires (summer, winter, all-weather). The abrasion of summer tires was slightly lower than that with comparable winter tires.
The exception of this are special sports strips that generally produce an above -average abrasion due to their mostly softer rubber compounds. For example, the ADAC found 225/40 R18 for the summer tire size that all the sports strips examined here has an above -average abrasion of up to 160 grams. “The trend towards ever larger and sportier tire dimensions is not particularly useful, especially from sustainability aspects. Some tire manufacturers should therefore urgently rethink and put the sustainability of tires more in the foreground, “says Dr. Reinhard Kolke, head of the ADAC Technik Center.
Which manufacturers are particularly recommended, which pats?
In detail it depends on the brand and type. So there are tires that have a low tire abrasion of less than 100 grams per 1 depending on the driving style.Enable 000 kilometers and can therefore be considered more environmentally friendly. With a good example, brand manufacturers Michelin go with "only" 90 grams of pro 1.000 kilometers, Vredestein with 100 grams and Goodyear with 109 grams. In particular, the michelin cross climate + (display) tires should be mentioned here, which in the dimension 185/65/15 showed only 58 grams of abrasion.
On the other hand, brand manufacturers such as Pirelli, Bridgestone and Continental can also be found in the list of manufacturers who, according to ADAC, have a significant catch -up requirement when it comes to tire abrasion needs. Pirelli occupies 134 grams per 1.000 kilometers together with Nokian the last place. Bridgestone (130 grams), Maxxis (128 grams) and the premium manufacturer Continental (126 grams) are not exactly spilling in this area with fame. Under the individual models, the "Blizzak LM005" from Bridgestone in size 195/65 R15 performed particularly badly. Pro 1.000 kilometers he produces a whopping 171 grams of tire abrasion.
Now buy the Michelin Cross Climate + at Amazon (display)
Michelin / Amazon Tire abrasion at cars: Which manufacturer fails, which shines?
Differences in abrasion between electric cars and combustion
The increasing electrification of mobility could even increase the problem of tire abrasion. Reason: Due to the heavy battery packs, plugin hybrids and especially the pure electric cars are usually heavier than comparable combustion engine and weight plays a central role in the abrasion. A compact electric car like the VW ID3, for example, weighs how to find the Site technical database, a whopping 1.8 tons.
As a result, these vehicles use tires and road surfaces more use. The tire manufacturer Michelin once confirmed this with his own data and predicted that the lifespan of tires on electric cars is less than with normal cars. Not only because of the high weight, but above all because of the high torque of the electrical drives.
The positive: At least the brake abrasion, which also causes high emissions, decreases significantly in the case of electricity if the electric vehicles realize a large part of the delay via the regenerative braking system. Means that the brake pads are only used in a small part of strong brake processes. The rest of the energy is converted into electrical energy via a generator.
More on the subject: Heavy batteries, more range: why e-cars need better tires
You might also be interested in: important winter tips for (e-)-drivers
Annoying disc scratching, foggy interior discs, less reach: Winter is often a challenge for drivers, regardless of whether they are traveling with a combustion engine or with a current in the cold. Site knows tricks and tricks on how to get better through the cold season:
Awesome sock trick: This is how you put the end with fitted car windows
Icy windshields: How to simply avoid scratching in the morning
Let the car run warm in winter: allowed or forbidden?
More range for cold: six tips for every e-car owner
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This article was written by Lars Schwichtenberg
The original to this post "Tire abrasion at cars: Which manufacturer fails, which shines?" comes from site.
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