Are you an owner?

Im driving 2007 1.5g avanza. For those who wondered about the effectiveness of anti roll bar or on the verge of deciding whether to install an anti roll bar on avanza, i would strongly say that yes GO for it!
I had installed 19mm arb from Ultra Racing, the effect is very obvious when taking long bend whether on the hiway or twisty country road. And when youre here, throw in the front strut bar to it too, steering will feel more sharp and responsive.
However, the main thing i could not overcome is the up down or vertical flex or bouncy or bumpy or whatever you want to call it when you hit a road dip (not potholes). I had changed all four abs, maybe next up will try to change the spring as well.
Cheers.

Yes i chg to stiffer shock abs, it does reduce the bouncy on uneven road and pothole, but those road dip is anotjer different story especially when drive fast.

Owner of 2007 Avanza 1.3L K3VE here ..... 245,000 km todate.
Yep, bouncing with road dip ...... sigh.
Do stiffer/harder shock absorbers help ?

i installed back in 2016.
rear anti roll bar 19mm rm600, front 4point strut bar rm300
The price had gone up compare to back in 2015 /2014.
after u install this two bar. Straight line stability also improved cruising on 110 - 120kmh is very stable if compafe with stock.
Not to say the cornerimg also very controllable now.

For power i domt think theres much to do to improve it.Maybe some air filter , or change the air intake.
What generation is yours anyway?

I bump up my tyre pressures helping up at agility and fuel economy ... probably acceleration too, IDK.
Factory recommends front at 31 psi and rear at 35 psi.
I selected 38 psi all round, now at 40 psi front and rear.

wtf 40psi?? thats like 400kpa on the tyre.
Its way too high man.
When i use factory recommended 31f 34r i also felt the rear tyre is floating left and right when driving alone or light loaded.
I found that 210kpa all round is the best in terms of road feeling , well at least for me anyway.

Limited tyre overpressure (say, up to 30-50 % above OEM's ) at design loads won't cause tyre overheat.
It's tyre underpressure AND overloading that cause tyre overheating.
Am getting 11.5-12.5 km/L i.e 400+ km per tankful fill.

hi all...

Avanza 2006 1.3 silver..fully standard except rims..changed to 15" only...

Tyre underpressure means below factory recommended tyre presssures .....
my Avanza 1.3 spec's  31 psi Front and 35 psi Rear ....
Try overpressure to say, 36-38 psi to see if fuel consumption improves .... albeit a harsher ride possibly.

The Michelin XM2 in use today at rear axle was manufactured in week 39 of 2011 ....
probably > 100,000 km mileage ???

Anyway XM2 that I have is not known for braking grip ..

Not sure tyre brands other than XM2 would make a difference .... probably would give it a try..
or maybe it's inherent with Avanza, IDK.