I could be mistaken but I thought i read somewhere that the 2002 tl-s pulls around .82-.84 lateral g's. I know the is300 pulls around .91-.92. My question for you guys is with springs,sways, upper tie bar and better rubbers what would you guess our lateral g's are now?

 

"It depends"

No really, the tires' adhesion to the road makes a huge difference, as is the suspension's ability to maintain tire contact and even loading.

I don't think you can predict the lateral g's of a particular setup unless you take it for a spin around the skidpad.

Out on public roads I think the lateral g figures are much smaller than even .82g, because of the imperfections on the road surface.

 

Daverman: Thanks for the reply, I was just hoping that I would be able to hang with a stock IS300 on the skidpad with my upgrades, o well i guess ill keep dreaming.

 

Lateral acceleration is affected by the things already mentioned, plus weight, wheelbase, etc. The IS is both lighter and shorter.

My butt dyno says my modified TL-S could pull perhaps .86-.87 on the Pirellis. That is damned good for a heavy, mid-size car.

Lateral g's are good for comparison of track potential, but for real-world roadhandling it is much less precise, where suspension geometry and compliance figure heavily.

Porsches in street form measure well on skid pads, but race one on a track and after 10 hot laps you will see the tires chunk differently on all 4-wheels, esp. in the older air-cooled cars. Do the same in an NSX and you will see uniform wear. So while they may make the same lateral accleration, the balance will suggest that in a race, the NSX would prevail.