Best thing to do is measure the tire wear. OEM tires can go anywhere from
40-90K, depending on factors like driving styles, roads in your area, etc.

I needed tires for a Supra but was on a low budget. The cheapest
'performance' tire I could get was $72. Road noise was a concern, since I
have the Sport Roof and usually only drive the car on days I can remove
the roof.

I got Hankook K106 "All Season" tires (*I* sure am not going to try them
in snow!) for $72 each installed. The Wear rating is 320, so I figured
they'd be noisy. They are so quiet it's unbelieveable! The handling is on
par with tires costing $20-40 more. They mayt actually be a good all
season tire, but I'm not going to be finding out...