Steering Wheel Problem
 

I brought in my car to Shamois, which is a car wash service. Not long after driving it away nice and clean I noticed the steering wheel seemed a little more jerky or stiff.. like it would feel inclined to go left or right on rougher streets... am I just being paranoid? I just bought this car a few weeks ago, but the steering wheel does seem to steer a little less easier than before.. like it's stiffer and will want to move left or right suddenly... I can still control the wheel, but it seems to take more effort now...

The car wash could just be a coincidence.. anybody have any ideas about what could be wrong?