2 Tone Burn?

someone told me today that if your burner is makeing a two tone affect on the dvd when you burn a dvd your burner is on its way out
by two tone i mean the burn ring where the dvd burns faster fron 6x to 8x or from 8x to 12 x
as my burns on 8x discs are all like this, from the center of the disc about 10 mm out it gets slightly darker to the outer edge

is this true ?

it happens. don’t worry, be happy

No it’s not true. The different colours are a result of the increased write speed and completely normal. It’s especially visible with DVD recorders that use the Z-CLV write method.

thanks for your replys