"Researchers said convertible drivers should consider wearing some form of ear protection, as motorcyclists do."
There's plenty of seasoned bikers out there with hearing problems. I have a Honda VFR800 and always wear earplugs when riding it. I commuted for 4 years on my bike, half of the journey on the motorway. The air rushing past your ears builds gradually as you accelerate and gets very loud at motorway speeds. It can be very deceptive.
I recently drove from the centre of my universe, Bushey, to Cardiff and back on the M4 and M25 with the roof down the whole way. The wind noise was nothing like that experienced on the bike with earplugs but then again I don't have a noise meter. I reckon the more your ears are out of the airstream the better and the 7's windscreen keeps me out of most of it even at 6'2". Winding up the windows does reduce this further but I prefer them down unless it's cold. (My heater is bypassed but will be replaced next month...)
I reckon the guys driving early convertables with AEROscreens like TR2's etc are the most at risk. It's just like riding a motorbike with your head directly in the air stream.
Adam
TR7 V8 DHC Jaguar Solent Blue. 9.35cr Range Rover V8, Holley 390cfm, JWR Dual Port, 214 Cam, Lumention, Tubular Manifolds, S/S Single Pipe Exh, 3.08 Rear, 200lb Spax & PolyBushes all round, Anti- Dive, Top Roller Bearings, Capri Vented Discs & Calipers, Braided Hoses, 4 Speed Rear Cylinders, Uprated Master Cylinder & Servo, AT 5 Spokes and Cruise Lights. No Door Stickers. Mine since July 1986, V8 from 1991