High Speed Vibes

[DH5481@aol.com]

While cruising to Jacksonville last night I was accosted by a Volvo 850 turbo
wagon.  Defending the old girl's honor we leapt into the fray.  He faded
after 100 - faint of heart, I guess.  The accelleration from 80 (.5 bar) to
100 (1.3 - 1.5 bar = not full throttle!) was inspiring.
About the time I hit 85+, the volume level in the car undergoes a step
increase - virtually a roar.  From 90 on, things continue to get louder
w/minor shaking.  This is consistant since I've owned it (4 months).  Tires
are new (firestone affinity touring), front end aligned, original exhaust.
 Car is quiet and Audi-like to about 82 mph.
How about anybody else?  Like to know if this is something I should be
concerned about, or just turn the stereo up.

Dave Head
87 5KCSTQ 166K miles