Hey guys,

Just a question. I have a 2018 Mustang GT with 255/40R19 in the front and 275/40R19. I noticed the car feels like it wanders in straight line
and if I let go of the steering wheel it for it gets out of the lane in second either way, right or left doesnt matter. Check the obvious PSI, tire condition etc. and everything looks normal. Car only 14k miles

It's almost like the wheel adjusts itself to the left just a little and then I have to give more steering input to keep it straight. I've been reading of some of the steering rack issues, but mine isn't exactly like that. It's what I would describe as "floaty" feeling. The car is unbelievable in the curves, but straight highway driving on my 30 mile commute to work drives me crazy because it pulls back and forth. Any suggestions?

 

does it seem to be following ruts or irregularities in the road?

if so, that is called "tramlining" and it can happen with sticky tires, especially those with a solid center rib . . . pretty sure you have Michelin Pilot 4S tires, which fit that description . . . . not sure if that is it, but it might be

 

If your not used to wider tires on the front they do have a tendency to follow the wear pattern in the road. I tend to drive slightly right of center so the steering is always trying to pull slightly left into the road groove. If I drive left of center the steering pulls slightly right.

 

Where I live there is nothing but ruts in our roads. The horse and buggies create a groove where the horseshoes hit the macadam. These grooves tend to cause tram lining with your right side tires. It is quite the PITA and especially in the rain because those same grooves now hold water to boot!