[whyzee125]

Square rear wheel setup with 255 or 265 all around

[CptSumTingWong]

So i know it's been a while, i've still be trying to dial out understeer unsucessfully.

I've since changed rear tow to .15 total toe in still 0 toe front

I also added solid whiteline sway bars 27mm front 20mm rear

running 235 front 245 rear RT615K+

I don't think it really made any difference. It rotates a little bit better on the brakes trail braking but still a ton of midcorner understeer. I can't carry the corner speed I want and have to unwind the wheel and track out much earlier.

Just feels like a lot of driving around the car. I'm not chasing lap times since this is just not a fast car but it just doesn't feel good which is then taking away a lot of the fun...

[Tambohamilton]

Put the stock front sway back on, give the rear zero toe.

Also what ride height are you running?

[CptSumTingWong]

Originally Posted by Tambohamilton

Put the stock front sway back on, give the rear zero toe.

Also what ride height are you running?

I'll give it a shot.

Ride height is set to about the middle of the coilover range so about 40mm drop?

[kolopn]

Check telemetry, usage of brake pedal, and speed sensors of wheels. To be honest setup of the car will be last thing to touch. Setup will give you time, but first of all I will focus on tyre pressures and braking style. Maybe you are loading front tyres too much, and they can't provide sufficient lateral grip to turn. Maybe, you're having to high steering input without balancing car with overall brake and throttle usage. Maybe you are holding brake too long, and that causes little lockup. If you don't have telemetry, maybe think about having some kind of easy camera, and pedal camera, or make dynamic log with throttle, brake and steering angle plot. Repeat that with couple of laps, and check how it look.

Overall if you are facing understeer general solution and the quickest will be to increase stiffness of rear arb or decrease front.

Do you have adjustable compression and rebound?

[whyzee125]

255's or 265's up front and lots of camber

[Tambohamilton]

Originally Posted by CptSumTingWong

I'll give it a shot.

Ride height is set to about the middle of the coilover range so about 40mm drop?

The front doesn't respond well to being too low - roll center goes through the floor. I think I'd raise it about 20mm and keep the stock rake. But tbh I wouldn't expect a night/day difference from that alone.

[autoart]

When changed from a 235 to a 245 Michelin pilot sports it made a huge difference.
What are your tire pressure settings? Remember the pressure goes up as you add heat to the tires.
I use chalk on the outside of my tires before I track and check after to see how far my tire has rolled/worn and adj. tire pressure accordingly.
Have you posted in the track section?
good luck on your quest!