Does this shop advocate changing the air in the tires, too? Maybe
> only on Fridays? ;-)

I'm a strong believer in changing the air in tires. I used to think it was a
trick, but a tire guy once brought me over to my car on the rack, said
"smell this", and let a small amount of air out the valve stem. WHEW! That
air was DEFINITELY bad! All of you are probably driving around on air that's
GONE BAD. Fresh air in the tires every 3 months. My tire guy only charges me
$15 (per tire). I trust him implicitly, since he's the guy that showed me
how my rusted-out gas tank was turning the gas PINK. I'm glad he caught that
and replaced that tank before it rusted through, 'cause to my untrained eye
it looked fine!