I have a 2013 Model S which is rear wheel drive only, that has begun exhibiting a worrying behavior in just the last few months: at higher speeds (above about 60mph) if I hit the throttle to speed up the car suddenly tries to veer to the right, and when I let off it wobbles to the left. Now I might expect torque steer from a FWD vehicle, but this car is RWD. Originally I thought it might be the suspension, so I had it checked by a company that specializes in suspensions, and they said the suspension is in good condition and the bushings are in great shape. I haven't noticed any other issues that might be related, and there's no noticeable motor whine so I don't suspect the differential. Since my car is out of warranty, the Tesla service center will charge quite a bit just to look at it, and these days it's not easy to get there, so I figured I'd post here first. Maybe someone has an answer, and it could help others who are experiencing the same issue.