Successful DVD-R's for burning maps

[kimono]

I've had grief trying to burn the V18 C1 iso posted in other threads here. Although it was working fine, the map crashes in certain parts of WA, and even when the sat-nav is off, I can hear the DVD reader trying to seek constantly. The original disc is fine.
Wondering what successful brands people have had with the various Gen sat-nav units. Mine is a 4GEN '09, and although I initially had success with TDK DVD -R's now it appears to have failed. or the ISO might have issues with it...
I know there's a lot of variables here, type of burner, OS, etc... just curious what grief you all have with it.

[jakey]

try and burn it on slower setting (like 2x) maybe?

[kimono]

Thought I had the speed susses but yes, might have to burn a bundle at different speeds and keep in the glove box... so I can swap when the problems start

The other symptom I get is during a destination search, i enter two letters then the system freezes while the disc looks up the next bunch of locations... Same with changing modes on the map, system freezes. I guess the burn is a bit sensitive to get right

thx

[wastegate]

Speed is the big key.

I used some generic yang chang media, didn't work at 8x, didn't read too much at 4x. Worked perfectly at 2x burn. The DVD reader in the satnav might only be a 1x or 2x drive.

[jakey]

Speed is the big key.

I used some generic yang chang media, didn't work at 8x, didn't read too much at 4x. Worked perfectly at 2x burn. The DVD reader in the satnav might only be a 1x or 2x drive.

I'm pretty sure it has more to do with the 'integrity' of the actual burn. Regardless of the burn speed the disc is read at the same speed, but burning on a lower speed ensures a good burn. - I could be wrong here but that's how I have always thought it worked..

[HyRax]

Aside from burning slowly, if the satnav drive is anything like some of the early-gen consumer DVD-player drives, you may have more success using DVD+R discs instead of DVD-R's.

[kimono]

have done a burn yesterday with DVD+R at 2x and seems good so far. but, i'll have to drive back up north to see if it still scrambles at wanneroo where it did last time although the system freeze seems to have gone. guess i'll see how it goes.
there is a theory that the higher speed the burn the better it is, who knows... pot luck I guess