Does electronic aids help or ...

[Rai-zero]

Originally Posted by ermax

The fix for me is to turn off the aids every time I jump in the car with the exception of rain, at least until I get tires that aren’t death traps. I’ve never had problems for n the rain although I’ve run nothing but ultra

As for the LFA in the video it seems cut and dry to me that it snapped on a shift. Listen closely. I don’t think he was trying to drift. Probably had the aids off and didn’t expect it to snap and overreacted.

I never turn off the aid but maybe we drive differently because I hardly ever get any intervention with the exception of me taking a turn while under power which was probably me over doing it. Also the most times I’ve felt was 1-2 shift on poor road surface, but this was like one half second hesitation and I’m not sure if the alternative of loosing grip is any better than cutting power.

I strongly recommend the Pilot Sport 4 tires which are dynamite and I think cure a lot of ills the BRZ may have.

[ermax]

Originally Posted by Rai-zero

I never turn off the aid but maybe we drive differently because I hardly ever get any intervention with the exception of me taking a turn while under power which was probably me over doing it. Also the most times I’ve felt was 1-2 shift on poor road surface, but this was like one half second hesitation and I’m not sure if the alternative of loosing grip is any better than cutting power.

I strongly recommend the Pilot Sport 4 tires which are dynamite and I think cure a lot of ills the BRZ may have.

Spinning the tires from 1-2 is WAY faster than the TC kicking in. For sure we must drive different. The aids kick in constantly for me. But then again I’ve got crap tires right now. I’ve used several sets of Dunlop Star Specs in the past but I think I’m going to give the Falken RT615+ a shot. Reading on the LeMons24 and Chump Car forums people seem to be impressed with the balance of grip:wear on the 615+. They aren’t equal to the grip of a RE71R but you get way better wear. I don’t think the performance of the PS4 will do the trick for me. Every time I drop to a Max Perf category tire I regret it.

[WolfpackS2k]

Originally Posted by redwine

Hi,

Just want to get some opinions.

Was taking a left corner on my BRZ when the car suddenly steer more towards left in a 'floating manner'.
(i suppose the torque vectoring kicks in). Est 60m/hr wet surface.
I have to immediately steer right to prevent hitting the car on the left lane.
And when it steer too much to the right, i have to counter steer and reduce gas to finally straighten the car.

The BRZ doesn't have torque vectoring. And is better off for it.

[Tcoat]

Originally Posted by WolfpackS2k

The BRZ doesn't have torque vectoring. And is better off for it.

The torque vectoring in the wife's Impreza is well done and I am a fan. That is in a AWD hatch though. Would not want in a RWD coupe.

[redwine]

Hey Guys...
Thanks for all the inputs

Regards to my "floating manner" experience,
looks like hydroplaning is the most likely cause.
(Both times it happen, i was on wet surface)

Yep, i'm on the infamous Prius tyre.
I'm considering to change to Mic PS4/Falken 452,
If i am only changing 2pc for a start, should the new tyre go to the front or rear ?
Will it be too much for the stock rim if i go for 225 width tyre ?
Understand 7J rim accept 205-215 tyre.

Regards to the absence of the Torque Vectoring on the twins,
iirc, the electronic will help you 'steer'.
I suppose the electronic do that by vectoring the torque btw the Rear/Right & Rear/Left wheel ?
Or it will only brake the Front wheels to achieve that ?


Cheers !!

[Stang70Fastback]

Originally Posted by redwine

Regards to the absence of the Torque Vectoring on the twins,
iirc, the electronic will help you 'steer'.
I suppose the electronic do that by vectoring the torque btw the Rear/Right & Rear/Left wheel ?
Or it will only brake the Front wheels to achieve that ?

It uses the brakes at all four corners to do this. The diff itself does not have the ability to direct torque apart from the standard diff-stuff it does.

[ermax]

I run 225/45R17 on my IS300 which also has a 7in rim and it’s just fine. As for which place to put the new tires, although not as fun I’d put the ones with the most grip on the rear. The car is already tail happy, no need to make it even more tail happy. I had a set of Dunlop Z2 all the way around my IS300 once and then need to replace two so I ended up with two Z2 Star Spec on the front. I didn’t expect the Z2SS to have that much more grip than the Z2. The car was really tail happy but I left it as is and just drove appropriately. Not sure I would recommend this to a stranger though.

As for the VSC. Although intrusive it does a damn good job. I leave it on in the rain and it’s saved me a few times when these crap tires let go even when driving like my grandmother.

[redwine]

Originally Posted by Stang70Fastback

It uses the brakes at all four corners to do this. The diff itself does not have the ability to direct torque apart from the standard diff-stuff it does.

That's clear

[gcranston]

Originally Posted by Stang70Fastback

It uses the brakes at all four corners to do this. The diff itself does not have the ability to direct torque apart from the standard diff-stuff it does.

Exactly. And if the VSC light isn't flashing at you in the middle of the dash the system isn't activating at all.

[Ganthrithor]

The aids can be annoying if you're driving hard intentionally (the fake "torque vectoring" using brakes is the one I usually notice if I'm cornering hard on a bumpy surface... it seems to be a bit more aggressive about interventions than it needs to be), but they're not gonna wreck your car. Leave them on. Sport mode is fine for everyday driving. If you leave everything on, sometimes the computer doesn't like accelerating into a turn from a stop sign or junction when there's any kind of loose surface (bit of gravel on road, dust pile, etc), but sport mode is enough to stop those annoying interferences.

Also if you live somewhere with rain, get the fuck off the Prius tyres. They're fine on dry roads but driving in rain with them-- even with plenty of tread left-- is like driving on snow.

[Clipdat]

In the LFA video, I notice the road surface changes from asphalt to concrete right before/as he spins out. Does the surface change or slight lip from one surface to another have anything to do with what happened?

[ermax]

Originally Posted by Clipdat

In the LFA video, I notice the road surface changes from asphalt to concrete right before/as he spins out. Does the surface change or slight lip from one surface to another have anything to do with what happened?

Didn't notice that before. Seems reasonable to me. From the sound of it the car shifted and snapped and then he dumped the throttle causing the rears to unload making the situation even worse. If he just stayed in it he probably would have been fine. Also, is it just me or those tires screaming a lot for performance tires? Maybe someone replaced the original tires with junk. I'm not even sure what the OEM tires are on the LFA.

Okay so the LFA came with S001's. Seems kind of under tired for that car.

[Clipdat]

Hard to say exactly what happened, or what the cause of the crash was, but one things for sure: he should not have been driving/accelerating like that on a crowded public road.

Originally Posted by ermax

Didn't notice that before. Seems reasonable to me. From the sound of it the car shifted and snapped and then he dumped the throttle causing the rears to unload making the situation even worse. If he just stayed in it he probably would have been fine. Also, is it just me or those tires screaming a lot for performance tires? Maybe someone replaced the original tires with junk. I'm not even sure what the OEM tires are on the LFA.

[Brooklyn]

On numerous occasions the electronic aids have prevented me from losing the back end, mostly during times of slippery/icy road conditions on the highway where I deliberately (and indeliberately) try to accelerate too fast.

In my 1st or 2nd year of ownership, I met a freak snowstorm on the highway (while running the prius tires). I had the electronic aids off and lost control before I even had the chance to react - ended up in the ditch. It was a stupid thing to have the aids off in those conditions and will never do it again.

On the other hand, when I had the chance to take my car on an ice driving course on a frozen lake, I found it much easier to predict the dynamics of car, as well as apply driving output (steering and countersteering) when the aids were completely off.

Just my 2 cents!