I just came across a backup with 3 years worth of gpsdrive tracks (of my own). I've been through half of them so far and it paid off. A good couple secondary and tertiary roads between Cork and Galway (mostly westcork, Skibbereen and north from there) and a few of the tertiary roads around Co. Galway, that I was missing.
Most of these roads haven't changed in the last 3 years and if there are small mistakes, they'll be easy to fix. Better than no roads at all. Westcork is worse than the mid-west with lack of mapping.