Hi everyone. I had two new tires put on the front recently, the Michelin Pilot Sport A/S and had an alignment done. I love the tires but since they were installed, I get pull to the left or right, depending on the curve of the road. My dealership service manager and I went for a ride on a local highway and yes on that road it seemed fine. The car followed the curve of the road. Pulled slightly to the right in the right lane and slightly to the left in the left lane. Well bring it on a local road and sometimes if you don't have your hands on the wheel you're going "off" the road.

My question is this. Is there an adjustment that will hold the wheel a little tighter so you don't have to try so hard to drive? It wasn't like this with the original tires. This happened after the new tires and an alignment was done.

I was driving my buddy's 06 Infinity G35 and what a breeze to drive. Even on bad roads, I told him my car would have pulled where his just kept going straight.

Tires? Alignment? What could it be?

I have Michelin Pilot Sport A/S tires, and my car tracks perfectly. Sounds like the alignment tech did not dial in enough toe-in to make the car track correctly on center.

I told him that sometimes I have to really hold the wheel on certain roads. He said that is normal. I can go to another Caddy dealer to see what they say but I don't know how bad that looks because they are all dialed in together right? I mean they all know where I go and what repairs or service I do...

A good alignment tech can fix it (unless the backs have some issue). Was it a four-wheel alignment? Castor, Camber & Toe should be adjustable front and rear.

It's not unusual for certain tires to do that and it appears to be a function of sidewall stiffness. However, the tires you installed should be fine for an STS. I suspect the alignment equipment was out of calibration--a very common problem unfortunately.