A weird 430 problem, Alignment?

Uneven wear on the tires and unequal tire pressures can make the car pull to one way or the other.

Fresh tires could solve the problem. If the alignment checks out, the only things left are the tires and wheels.

 

swap the rear tires, if the car pulls to the other side, just buy a pair of new rear tires.

 

Yes, I had same problem before until I changed all 4 tires then the rides were back to normal. I think your problem should be just related to tire problems e.g. flattedspot tires, uneven wear or just simply uneven tire pressure as mentioned by bdelp.

 

If the car has been aligned properly and there are no obviously loose or worn parts, the tires are the next place to look. It's possible that even with "normal" wear showing on the tread that there is hidden damage to some internal structure such as the belts or belt cap. Have you recently hit any road hazards like potholes?

 

If as you say the car is perfect on the same stretch of road with different tyres all round, then the cause of the slight pull to the left must be down to tyres, and not the geometry of the car. In the uk like you we are rhd and I know for some reason I drive a little harder going into a right hand corner when driving fast, and with a soft compound tyre this would scrubb the tyres with all weight across to the outside edge of the near side tyres. Possibly causing a very slight camber ( not visable by naked eye) to the tyre. Or maybe due to tyre spinning at a right hand junction maybe not by you but someone who has worked on your car or a freind.
But I think you answered your own question with regards to the solutuon.
NASCAR is something I know nothing about and have never looked into, but maybe someone else can dismiss/confirm this theory regarding tyre wear, and pressure to one side of the car as they circle the oval.

 

That makes perfect sense, "track & tires"; the track that I have been going has 80% right turns and the tires were worn unevenly. ..

 

Check the tire pressures before you purchase new tires.

-mike

 

Had exact same issue on mine, but my tyres had been changed recently (<1000 miles of wear!). I swapped the front wheels and it pulled in the opposite direction; I tried a set of doner wheels/ tyres and the problem was corrected. It turned out to be a rogue Pirelli PZero which ended up being changed and the probelm was solved. I understand this happens from time to time with cars that have been standing for a while or even with the odd batch of Pirelli tyres that have been in storage for excessive periods.

Hope this helps.