So Ive been having some traction issues with my 2015 Is 250 lately on the stock bridgestone tires from the factory and I still have lots of tire tread left. Traction control is ON and 7/10 times I apply moderate throttle, the rear end comes out and the car goes straight but the car is slightly in a diagonal angle. but its very subtle. Enough to notice but not enough to spin the car out or anything. As soon as I let go of the gas, the car straightens right up. Anyone else having similar problems? Or is it just me? Dealer ran a diagnostic check on it and it had no issues.

 

go to the dealer and replicate the issue with a tech in the car

 

Maybe your tires are uneven or unbalanced. It's hard to believe you are losing traction when the TC is on.

 

Check cars alignment.