I'm guessing they are leather gloves? Do you know the style or name of them? Maybe a pic of the actual gloves?
Whatever they are, I wouldn't think they should be oiled (mink oil, saddle soap, nothing like that)
Alot of gloves anymore are a synthetic leather, which I wouldn't think should dry out.
My dirtbike gloves will get wear holes in them in a year or so, but they get alot more abuse than streebike gloves do.
If ya can get a pic of them on here, maybe we can figure out what's up.
AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC
"When life throws you curves,
Aim for the apex."