[Doug Axelrod]

I've had this problem (at least I think it's the same), particularly when there's wind and cold. Silly me, trying to emulate Daily Driver Copple. Anyway, on those cold days a thick wool cap pulled over the ears helps. On long drives those ear plugs that are of dense foam and get rolled into a long cylinder before putting into the ear canal where they re-expand and block most sound work quite well. They don't block all sound, so it's pretty safe, though the engine sound really hits you when you take them out at the end of a drive. The ear plugs are cheap at drugstores (pharmacies).