GR Yaris Gravel suspension magic / components for GR Yaris

So, installation completed at last.
As it was a head-ache to find a good professional workshop to install it in my vicinity (without having to wait for three months...), in the end I did it myself with the help of a friend (also owner of a GR Yaris) for the wire loom and to get the new front shocks in.
Then about a week passed without anything happening due to some health issue, and then easy easy got the rear done by myself in about five days. This includes ride height set-up and testing various settings in the 5 modes proposed by the system.
Ofcourse, in normal conditions, the installation can be done by oneself in two-three days taking your time, without any specific tools, without a car hoist, just a jack and four stands. The car doesn't need to be high off the ground, on the contrary, you will need to reach inside the engine bay, inside the car and the trunk, so just high enough to get the wheels off, is high enough. Ideally about 40cm high allows to work comfortably.
So after testing a little, and I still have to play with the parameters of the five different modes, she really rides beautifully, absorbs everything, no more "banging" of the suspension in some bumps on the road. The pitch & roll control is so well programmed that the shocks themselves could do the job of the anti-roll bars ! So no need to fit any bigger ones, even though the springs are softer in the beginning of their compression travel.
Furthermore, no need for any extreme geo set-ups anymore (going for the alignment tomorrow), just stay OEM for camber for example, the suspension working to keep the tyres digging into the tarmac all the time cancels the need for anything extreme set-up-wise.
They boast 50% to 100 % more tyre life !
A big thanks to Simon Rogers for a lot of online help and advice. He is a technician in TracTive Holland, having installed several kits for GR Yaris before. Really implicated and passionate about these kits. In addition, he did confirm to reassure me that I wouldn't lose the 2 year warranty if I installed the kit myself.
What else can I say ?
Get yourselves a kit, you will not regret it ! It's as if you bought 5 different sets of suspension, and being able to switch from one to the other, in less than 10 milliseconds. It absolutely bonifies the GR Yaris !
Attached a few pics.

GRY sur chandelles 1.webp


GRY sur chandelles 3.webp


Ressort OEM vs Ressort TT.webp


TT Amorto AR 1.webp


TT Amorto AR 2.webp


TT Combiné AV 1.webp


TT Combiné AV 2.webp


TT Front Camber Inserts 1.webp


TT Ressort AR 1.webp


TT Ressort AR 4.webp
 
Today got the wheel alignment sorted out.
Surprisingly the Rear toe hadn't moved out of spec too much. Found @ 0, brought it back to +0°04' each side. Rear Camber remained at -2°.
Front was found toed in far too much and excessive camber (for road use) . Found @ -3° where previously was set-up @ -2°
Caster was OK @ +5°44'.
So remaining to drive around 4-500km to have the suspension "settled", continue testing on all sorts of roads, monitor front tyre inner wear, and then check the ride height if further tweaks are required or not. For the meantime, she's very slightly lowered at -8mm in front and -7mm at the rear.
After that, I will most probably install one of the two eccentric inserts sets provided by TracTive for the fronts to bring camber back to a more reasonable -2° to -1.8° and obviously have to re-adjust toe accordingly.
 
Given the ease of setup change between road and driver condition this Tractive kit is really interesting. Fits well to the multipurpose versatility of a GR Yaris.

It really does.
Attached a few pics of the touch screen position in place of the driver's side window vent. (The air still flows around the screen). All very simple, all well explained in the instruction manual.
They also supply a knob that you can install just about anywhere you like on the dash, center console, or side console driver's side, anywhere convenient to your reach, this making it easier to change modes quicker than tampering with the touchscreen.
I haven't installed it yet, maybe never won't, but if I do, it will probably end up on the center console just above the torque split button.

TT Touchscreen 1.webp


TT Touchscreen 2.webp


TT Touchscreen 3.webp


TT Touchscreen 4.webp


TT Touchscreen 5.webp


TT Touchscreen 6.webp


TT Touchscreen 7.webp


TT Touchscreen 8.webp


TT Touchscreen 9.webp


TT Touchscreen 10.webp


TT Touchscreen 11.webp


TT Touchscreen 12.webp


TT Touchscreen 13.webp
 
Hi guys, to be able to finalize my ride height adjustment, and to make sure I started off with the correct figures, could you tell me what is the height between the bottom of your wheel rim and summit of the wheel arch on your car please. Edit : Front and rear please !
The measurement should be taken with the car parked on an even / level surface ofcourse.
Refer to attached photo for clarity.

NOTA : Please only answer this question if you have OE suspension & the OE Circuit pack wheels fitted at the momlent of measurement, thanks !

Ride Height Measurement.webp
 
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Attached a few pics of the touch screen position in place of the driver's side window vent..
Yours looks completely different to mine! Much more modern.

I guess it's some sort of firmware update so I'll have to give them a shout.

I wasn't aware of any knob either. Do you have a photo of that? Would much prefer something physical as I hate touchscreens when driving.
 
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Yes, I think you are right, I have V2 it is a firmware update.
As for the knob, it's an add-on they supply with the V2 kit now. You have to wire it into the screen's wires, or, if you get the extension wire's plugs in the right place, you can insert the wires into one of the plugs I suppose. They supply a clear wiring diagram.
Once the knob connected, you can choose from the touchscreen whether you're operating it from the touchscreen or the knob. It seems easy to operate, turn (to select) and push (to confirm) once you've selected on the touch screen which of the three menu pages you want to interact with. I think that most of the time it will be useful with the Mode's page.
Securing the knob requires to drill a diam 6mm hole in the dash somewhere or just through one of the empty button blanks to fit the silver part through, then push the black knob itself over, tighten and finish with the red cover. The red plastic cover is just to hide the screw. There's no back light on it.
Attached some photos.

TT Knob 1.webp


TT Knob 2.webp


TT Knob 3.webp


TT Knob 4.webp
 
It says you can specify to use oem top mounts and i found recommended springs specs. €165 per spring totals to €2660.

IMG_5170.webp
 
You can see it in the picture above. 3.5 front 4.2 rear.

Oops sorry, At the moment I read I was thinking it was their weight ...
So Fronts very close to OEM, rear a bit stiffer... Not sure I would like such a "bouncy" stiff rear. OEM F & R springs are same stiffness, and already the rear was somewhat bouncy pushing on B-Roads, thus the rear feeling very "light", at times, the rear tyres not having enough grip overall on some stretches of bad tarmac B-Roads. You need to be very awake / aware / alert with such a rear set-up.
But then that all depends on each one's driving style and preference ofcourse.
 
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You can see it in the picture above. 3.5 front 4.2 rear.
So Fronts very close to OEM, rear a bit stiffer... Not sure I would like such a "bouncy" stiff rear. OEM F & R springs are same stiffness, and already the rear was somewhat bouncy pushing on B-Roads, thus the rear feeling very "light", at times, the rear tyres not having enough grip overall on some stretches of bad tarmac B-Roads. You need to be very awake / aware / alert with such a rear set-up.
But then that all depends on each one's driving style and preference ofcourse.

It's also very related to the quality of the shock absorbers' associated with these springs.
 
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