GR Yaris Tyre for trackday & road

[Wayne]

I tested the Yoko A052 on my GRY, bluffed by the exceptional grip on the wet and ofcourse excellent on the dry. Tire walls are nice and rigid, without any track did 8500 km with them.
Now I'm on PS Cup2, very good on the dry, haven't tested them on the wet yet, but I don't expect them to be as good as the PS4S on the wet.

PS Cup2...very scary in the wet....

 

[Michael Knight]

PS Cup2...very scary in the wet....

Disagree. was on wet track with 3 year old cups this week and they were ok to go. Of course if you're missing threadwear its not a good idea to drive over 100mph if there's standing water. but on damp track they work rather well. its all the same with semi slicks - if your thread wear is low, they suck in rain.

 

[Onehp]

PS Cup2...very scary in the wet....

There has been a quiet but major compound upgrade on Cup2. Newer Cup 2 are much better in the wet then they were when they were just launched.

 

[Wayne]

Disagree. was on wet track with 3 year old cups this week and they were ok to go. Of course if you're missing threadwear its not a good idea to drive over 100mph if there's standing water. but on damp track they work rather well. its all the same with semi slicks - if your thread wear is low, they suck in rain.

All I can say is on my old I20N, when it was wet, it was not a confidence inspiring drive......

 

[Onehp]

I tested the Yoko A052 on my GRY, bluffed by the exceptional grip on the wet and ofcourse excellent on the dry. Tire walls are nice and rigid, without any track did 8500 km with them.

Reading your post and the answers in this thread, the A052 regained my attention as a very driver enthusiast road tyre. I didn't realise they were so incredible in the wet (apart from aquaplaning) and even good in the cold. On dry track also great grip but sensitive to overheating and then wearing heavily - hence considered a sprint tyre. But in Tire Rack recent tw200 shootout, wear was among the better on their M2. So if you know what you're doing, longevity can at least be somewhat acceptable.

Also suprisingly comfortable and quiet, so very easy to daily.

Maybe most importantly, they behave* very nice on the edge of grip, very progressive both dry and wet.

I do think on the GRY, it will reveal some need for a sharper chassis incl more camber, better damping suspension and/or better locking diffs, simply because the grip will make you lift inner wheels which the torsens don't like.

The thread is inspired from tarmac rally too.

So now it's my new favourite* "high grip tarmac rally enthusiast daily" tyre, lol.

A052!

On twisty Swiss mountain roads, driven aggressively, they don't last long, after 3500km the outer tread is slowly disappearing at the front, but they are still ok at the rear. I'll probably change the front tyres at 4000km. Absolutely brilliant tyre, massive grip, no slipping, creates a lot of confidence and cornering speed is crazy, no comparison to a UUHP tyre.

Word. You probably just need more camber in the front, and shift tyres now and then.


* my experience based on a non-GR and heavier car.

 

[TrueTurbo]

Word. You probably just need more camber in the front, and shift tyres now and then.

* my experience based on a non-GR and heavier car.

The A052 has a softer sidewall and needs 3.0° chamber which is too extreme for daily driving.
The AD09 has a much, much stiffer sidewall and handles/wears a lot better on 2.0°-2.5° chamber. Unfortunately, for some weird reason, Yokohama doesn't sell the AD09 235/40/R18 in Europe, so.... welp

 

[Onehp]

The A052 has a softer sidewall and needs 3.0° chamber which is too extreme for daily driving.

Well yes and...no for an extreme driver with an extreme tyre choice.
I drove my GRY with 3 degrees in front, and if you understand how that affect handling and if you actually drive hard enough to wear your outside lf your tires, which I did, it's fine.
With an A052, you basically find the camber where it wears more or less evenly, according to your driving. Maybe let the rear follow, so not to make the car too lively in the rear especially in emergency evasive action...