Will 8 speed discs also work when written on 4x?

Help please anyone,
I have a Pioneer DVR-A06 writer which is supposed to write dvd at 4speed. I bought 8 speed discs by mistake, will they work or should I just bin them?

why not try burning them at 4X first, 8x is the max rated speed.

8x discs mean it can burn up to 8 speed (compatible with 8x burners). Just set the speed to 4x before burning.

Yo-

You’ll be all right as they should be 1x - 2x - 4x - 6x - 8x media-

Mike

Thanks for your help.