.....this has never happened.
Dropped my car off for an oil change. Place called Tire Kingdom.
A while later, the guy calls me up.
"Uhhh...about your car. [Oh, oh, I'm thinking.] You don't need new oil. You've only driven 25 miles since the last change [car just sits in the hot sun for six months] . The colour and viscosity are good, I'd feel bad changing it."
Wow "You don't need an oil change", said nobody ever.
Of course, when I went in to pick it up, the guy says, "But you do need new tires."
Ba da boom! Of course! It's a tire place.
He said, they've got "tire rot". [I'm thinking "tire rot"? Is that like when a mechanic tells you your engine needs a new Johnson Rod? It's like crap they just make up?]
Post Script
So I got home and Googled "Tire Rot".
"Tire dry rot is also called sidewall cracking. Comes from sitting in the hot sun with little to no activity."
Bingo. Well, what do you know.
I looked for the URL reference, it was "Tirekingdom.com".
Of course.
Actually what I think I found was their training manual.
"Anybody that comes in. With an old beater.
You tell 'em, 'tire rot'.
And you say it with a straight face."