However, a tyre marked with the speed symbol ‘Y’ which, after undergoing the relevant test, exhibits superficial blistering of the tyre tread caused by the specific test equipment and conditions, is deemed to have passed the test.
Nopeustunnuksella ”Y” merkityn renkaan, jossa ilmenee asiaankuuluvien testien jälkeen testilaitteiden ja -olojen aiheuttamaa kulutuspinnan irtoamista, katsotaan kuitenkin läpäisseen testin.