Left front tire shows signs of cupping...grrrrr

When you took your car in to Toyota, you should have received a piece of paper showing all 4 tires, and their alignment specs. Bring that back to the dealer, compare with new alignment.
I am assuming your Toyota dealer has a laser alignment jig they drive your car onto! It makes for a very precise alignment. If they do not, find someplace that does.

 

How many miles do you have on the car?


iPhone ?

 

Unfortunately a lot of alignments don't work out due to untrained or careless technicians and uncalibrated alignment equipment. I had some alignment issues with my previous, Gen2, Prius. The only thing I would suggest is don't take it back to the same place. Ask around and try to find a shop that has a good reputation for alignments and good equipment and pay them to do it. I understand Hunter alignment equipment is considered the best.

My present, Gen3, has over 75K miles and has never been aligned since it left the factory. As long as the tires wear evenly and it continues to drive good I won't have it done. At one time I had an alignment with each set of new tires, no more.

 

Cupping is usually, but not always, a shock absorber problem. At 45k miles you could need new struts.

The old bounce the car and see if it stops at the end of 1/2 cycle that our grandfathers did won't detect this shock problem. Shocks have gotten more sophisticated and long slow motions like when you bounce the front end of the car are controlled by different bits in the shock than short sharp movements like the motion that causes tire cupping.

If shocks fail grandpa's bounce test, they are bad. If they pass grandpa's test, they might be good or might be bad.