23 replies to this topic

[Kibim]

I've had much the same problem on my car, with stock suspension/hp. At the time, i was running a Pirelli P7000 at about 2.5bar. I've since changed to the new Dunlop SP9000D, much softer tyre, and running 2.2bar, and it's much much better. Although, give it full throttle, and i'll hop and skip all over the place. The roads here are rather bumpy though... to the extend that i sometimes find myself complaining that my stock suspenstion is too hard.

With the LSD up front on my car, on the track, if I launch too hard, the whole front of my car bounces, on a smooth surface. I think it's just one of those high powered FWD car nuanaces, that's not going to be solved easily.

[steve s]

the thing is... we just went to test drive an acura tl.. not too bad. it went thru some bumpy roads at wot...some fairly noticeable torque steer..but it didn't seem to hop all over the place.. and it went thru some tight curves with midturn cracks and bumps..didn't jump across when it went thru..fairly planted.. it is a lot softer. i know i know, it's 15 years of technological advance..double wishbone vs mcpherson strut. but still..on all-season tires..it wasn't too bad..

Edited by steve s, 26 October 2004 - 06:50 AM.

[Kibim]

And weight difference? (I don't know the acura, we dont' get 'em here...) 'cause if you think about it, the lighter a car, even if the ride is harder, the rebound will be less, momentum and all that physics stuff.

I see you're running 215/45. Try dropping the pressure by like 0.2bar. Might make more of a difference than you'd imagine. On a track, you want to run reasonably high pressure, to prevent side wall from bending under heavy cornering, but everyday, a few PSI less will ultimatly give you a better grip on bumpy surfaces, and keep your teeth in place.

[XtremePsionic]

the thing is...  we just went to test drive an acura tl..  not too bad.  it went thru some bumpy roads at wot...some fairly noticeable torque steer..but it didn't seem to hop all over the place..  and it went thru some tight curves with midturn cracks and bumps..didn't jump across when it went thru..fairly planted.. it is a lot softer.  i know i know, it's 15 years of technological advance..double wishbone vs mcpherson strut.  but still..on all-season tires..it wasn't too bad..

sigh... you've said it, they do have much better suspension design than our 850s. Its just the way it is, our suspension components are heavy and camber/toe control during bumps aren't as good as the TL's.

If you can source some lighter suspension parts (pre 94 control arm? don't think you can get them anywhere) or harder bushings so things reacts faster, or very light wheels, I don't think you can make the 850 perform much better than it already does.