Michael Knight
Totally Hooked
I drive 99.9% on sport mode, TC and nannies off when going on twisty roads.which drive mode? I never had the chance to take mine out in snow
GR Yaris What did you do to your GR Yaris today?
- Thread starter MrJ
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Spirited
Obsessed member
- Jan 23, 2022
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I've had similar thoughts about my ability to handle the GRY's on-limit antics. So, it might be that I am getting older too, but chances are, this is more of a characteristic of the car.
Experts have said that this car is very flattering, ie makes us appear to be better drivers than we actually might be. I interpret that as it being very capable and, to an extent, forgiving. It's still a performance car, though; with great power comes great responsibility, etc.
My thoughts on how to improve the situation with the rear snapping off too quickly:
- aftermarket rear trailing arm bush (can be tricky to find the right one for your weather/road conditions).
- experimenting with closing your rear toe a bit.
- a combination of the above two.
I believe the stock rear trailing arm bush isn't GR grade. So, a change to a stiffer one should make snapping off noticeably more progressive and better communicated, therefore less surprising and more controllable. At least, this has been my experience, despite opening up the rear toe (still toe in, though) at the same time as I had the rear trailing arm bush installed.
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Sam
Totally Hooked
- Dec 6, 2021
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In what situations have you guys found the rear to step out or be unpredictable?
Michael Knight
Totally Hooked
Luckily Ive got a set of rear trailing arms with dna bush arriving so can report if it helps
Michael Knight
Totally Hooked
maybe its most evident when traction changes, it disappears quite suddenly. So first you have good traction but suddenly you dont, and that comes sometimes quickly.
This is most often surface derived so not necessarily pure chassis dynamics as such
When traction is stable car is quite relaxing to toss around
Spirited
Obsessed member
- Jan 23, 2022
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For example, think energetic start with almost full lock. Or lift-off oversteer. All at lower speeds.
The problem isn't the car's tendency to rotate/oversteer that many wish or actively set it up for. It's the instant hop-like movement of the rear that can catch you by surprise, as the car feels much more agile for a brief moment.
The car's less-than-ideal weight distribution may be a contributing factor, but that's a given rather than something that can be changed for a few hundred £ and no additional weight.
(This unpredictable behaviour may have exaggerated the fishtailing on harder braking I had from new, but the main cause of that almost certainly was some silly geo settings it must have had from stock; so, the fishtailing stopped as soon as I set my own geo settings).
Sekred
Obsessed member
- Dec 18, 2021
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Changing the rear trailing arm bushings definitely improves the rear stability under hard braking and acceleration but you will sacrifice some NVH.
A small amount of Toe in stops the fishtailing as Spirited mentioned.
The first time the car fishtailed on me was braking from around 160ks into an 80k corner. Considering I had driven the same road dozens of times in WRX and Fiesta ST it was like WTF. Turns out the rear was toed out about 2mm.
I have done nearly all the front and rear bushes. Completely changed the car it's just rock stable now. So much better to turn into a corner when the rear is not wandering.
A small amount of Toe in stops the fishtailing as Spirited mentioned.
The first time the car fishtailed on me was braking from around 160ks into an 80k corner. Considering I had driven the same road dozens of times in WRX and Fiesta ST it was like WTF. Turns out the rear was toed out about 2mm.
I have done nearly all the front and rear bushes. Completely changed the car it's just rock stable now. So much better to turn into a corner when the rear is not wandering.
I recently did my first track day using stickier rubber. The weather was very hot (38c). The day had been planned for so long with friends that I was reluctant to pull out due to weather.
The Kumho V730 200tw tyres were incredibly consistent, providing very good feel and feedback. I was impressed given the punishing conditions.
After a cool down lap the front brake rotor temps were still over 300c when measured in the pits (Intima SR pads).
Unfortunately, the power was much reduced in this (admittedly) very hot weather. I now have an aftermarket intercooler ready to fit, looking into intakes and an oil cooler to also help reduce temps.
My car was the very last car circulating on the track, long after most had given up due to the heat and gone home.
The Kumho V730 200tw tyres were incredibly consistent, providing very good feel and feedback. I was impressed given the punishing conditions.
After a cool down lap the front brake rotor temps were still over 300c when measured in the pits (Intima SR pads).
Unfortunately, the power was much reduced in this (admittedly) very hot weather. I now have an aftermarket intercooler ready to fit, looking into intakes and an oil cooler to also help reduce temps.
My car was the very last car circulating on the track, long after most had given up due to the heat and gone home.
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Speaking of trackdays, specially with hot weather.
I am using a mix of (around) E30 when I do trackdays.
Is anyone doing the same? That should be really helpful to avoid knocking, without any harm to the fuel system.
Michael Knight
Totally Hooked
When I had toe out on the back end it had a very nervous rear, bit like that dodgy curry from the corner shop that the health department shut down. Went to slight toe in and the problem disappeared. You can still nudge the back out but it has to be a concious effort, or drive on toyo r888r on a wet track. Not fast but very very hard to stop laughing.
First snow for my mk2, fun was had.
It’s against the law here in NorwayWorks fine, just slower
We only get a couple of days of snow in Belgium so no law in place. Managed to get stable figure eights quite easily so they behave ok, consistent just less grip of course. It was fresh snow too, the easiest, I wouldn't try going out in icy conditions.It’s against the law here in Norway
Bought it a new JDM-style (but UK legal) 2-line reg plate.
What's best for getting the old sticky pads off without damaging the paint?
What's best for getting the old sticky pads off without damaging the paint?
GRavy_Baby
Dedicated member
