I have 20" wheels

fronts are: 8.5"
rear are: 9.5"

the tire size that is on the car is 245/35/20.

is this right?

 

That size seems correct for the front rims....

Rears should be something like 275/30/20

 

The 245's will fit the 20x9.5. However, with your staggered set-up the rears should be 275's.

 

Picked up car from dealer today and they put 4 new tires on my car.

They put on toyo
front: 255/35/20
rear: 275/30/20

the dealer definitely kept there word and did a great job. I had a sedan for a loaner and it was great.

 

Right on! That's good to hear. Kudos to your dealer for making it right.