Yup also the same with my alza. Already done alignment at sc still the same.

I have this too. On hiway, the road normally angle left for water to run off..this could be issue.

You can try have left side tyre pressure a bit more.

But just slight left only. That is how I understand

Strut bar / Strut brace will not help to correct suspension geometry instead it acts as a brace to stiffen both strut tower section thus help minimize flex.

I have strut bar, not helping on this slight left on hiway.

If i have budget, i may go for anti roll bar at rear.
Not sure about others thou

Ya...price is steep...if have 19mm ok also....

Actually I don't have any issue with car pull to left side until a point I have not send my car for alignment after rotate 4 tyres at home.

Looking for Alza std Auto, where to get best offer ? Anyone?

I have this problem when i got my car. Tried alignment n balancing still the same.

Then send to my tyre shop. He say silverstone m5 got this problem. Swap 1 of the front tyre to back..settle..maybe u can try this.

Seems like many people had this issue including me. I run mine with Yokohama tyres also same. SC swapped tyres and even RMA absorber. Problem still there.

Mine currently pending on HQ to diagnose. I deal with PJ SC.

is it everytime everywhere, the Wooong sound at that specific speed?  I am not sure what is the issue as there are many things can contribute to that woong sound..

if I understand the woong sound correctly that you mentioned, it could be the wheel bearing, but funny is after 85kph, no more. get your mechanic to have it check.

It is hard to say here what issue it is as we don't know where the sound coming from.

What you can try test is/are:
1. Gear on P, try ramp the rev fast and slow... rpm 2k..2.5k then 3k...you can do it from the engine compartment and try hear whether any sound coming from engine. 
2. the Woong sound is coming from front? 
3. how old / what KM mileage now.. have you change engine old and ATF??

usually tyre wont give you woooong sounds.... most likely is wheel bearing as the vibration starts around 50kph, as for 85kph onwards, the wind noise is louder than the wheel bearing noise hence it seems to be gone, do you have any idea which wheel it come from? Usually it happens on a single wheel rather than both wheel together, is possible but unlikely. Let's try to test it on a road, go for 50kph, then find a corner that allows you to turn at 50kph, turn left and turn right, if you turn left and the sound is gone, is left rear, vice versa.
My house saga BLM have a tri annual wheel bearing problem so i know how suck it is. And i just got the right rear wheel bearing replaced two days ago.

8k only.. ok.. see first. if no sound from engine.. then assume it is either the tyres / alignment

im getting the alza base spec auto with rm1700 rebate..
but the interest seems abit higher 3.4% for 7yrs..3.5 for 9yrs..
getting this alza to bring people from town to airport..within 120km++