Unstable suspension

[KAREEMMK5]

I'm running a pure 800, catless dp, and a ecutek tune. Pushing very high torque numbers low 6XXs whp..
I am also running the hks adjustable springs and on PSS fronts and back 275/295
Whenever I floor it in 3rd-4th-5h at around 100km or more the car feels squirmy? if that's the right term? It wants to slide right and left slightly. I don't know if its the crappy PSS that cant handle the power or is it a suspension issue and coilovers would fix that problem.

Any idea from the guys running big power?

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[KAREEMMK5]

Ps. I posted this thread for Zrk's answer.

 

[Thraxbert]

It's your tires. If you intend to street that kind of power, you need a big boy tire like Toyo R888R (or similar).

 

[KAREEMMK5]

It's your tires. If you intend to street that kind of power, you need a big boy tire like Toyo R888R (or similar).

they are still new though, around 2000km only on them

 

[Thraxbert]

they are still new though, around 2000km only on them

It doesn't matter. The PSS can't hold that kind of wtq. They don't even hold traction on a bone stock Supra going to WOT.

 

[razorlab]

Alignment too

 

[KAREEMMK5]

Alignment too

Already fixed that let me see if i can find it

 

[zrk]

Alignment for sure, but you want one that's good for what you're trying to do. I can find my numbers here somewhere.

Also, get some non-trash tires.

If you lowered the car with the coilovers, raise it up a little bit. Lowered cars don't do great in high torque/high hp straight line applications.

 

[KAREEMMK5]

Alignment for sure, but you want one that's good for what you're trying to do. I can find my numbers here somewhere.

Also, get some non-trash tires.

If you lowered the car with the coilovers, raise it up a little bit. Lowered cars don't do great in high torque/high hp straight line applications.

I just want a fast street car
no drag
no track
would you please share a good alignment setup please so I can tell my garage to apply it.

i'm lowered on hks springs, not coilovers.

and for tires, I might just pull the trigger on r888r, im on te37sl so I guess a 265/305 setup is the best?

 

[razorlab]

Why oh why do people continue to think r888’s are good tires.

Pick any good current 200tw

 

[KAREEMMK5]

Why oh why do people continue to think r888’s are good tires.

possibly because they are reasonable in pricing?
what else would you recommend?

 

[zrk]

I just want a fast street car
no drag
no track
would you please share a good alignment setup please so I can tell my garage to apply it.

i'm lowered on hks springs, not coilovers.

and for tires, I might just pull the trigger on r888r, im on te37sl so I guess a 265/305 setup is the best?

 

[KAREEMMK5]

Great!
Thanks.

 

[StevesMK5]

toyo r8888s give better grip over stock, they also look really good on te37sl wheels. only negative is they are loud on the highway. I noticed an immediate difference after switching. also upgraded to hks adjustable springs lowered the car an inch and a half. did an alignment. it feels like it's on rails. stock the car felt loose and nervous at high speeds. also added Cusco under braces.

 

[VA90]

The slight movement is also the differential doing what it's supposed to do. But yeah, it's mainly a function of bad tires, possibly alignment. As for tires, if dry grip is your objective, I'd sooner try something like the SC3R ahead of the R888R. The investment in proper good tires is really worth it. I have Cup2s and it's like a revelation over the stock Super Sports.

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