Just got home from work and my wife has mention theres a problem with the car .

When driving in a straight line the steering wheel rocks left and right . Its doesn't do when cornering . 

 

I'm going to try and get it looked at tomorrow. 

 

Any ideas what it could be?

At what speed?

 

Start with the easy things.

Tyre pressures.

Wheel balance.

 

Thanks AG Falco

Been out to do some problem solving.  It's either front tyre or wheel . 

Wheel nut tightness?

They were all tight

Rotate and balance, re-check.