Floaty feeling at higher speeds common?

[kimona]

Originally Posted by Rigaud

My 2009 2dr hatch swayed....floated on the highway before the sway bar was installed. It holds straight like on rails since.

My '07 suffered from terrible highway wander and float. I installed a rear TRD anti-sway bar which indeed helped with stability at cruise to some degree, but did not eliminate this problem. (Of course, handling in corners was much improved).

I experimented with multiple tyre tread patterns and tyre pressures with and without the anti-sway bar. I discovered that highway wander could be completely eliminated with the correct tyre; tread pattern is all important on the Yaris.

I learned to be very selective choosing the right tyres for my '07 and now my '14. I've always used 205/50/16's with 32 psi front and 29 psi rear. I'm on stock suspension, and I don't use the rear anti-sway bar. I can drive the car at 90MPH with no wander and no float.