understeer question

[jacabean]

what would happen if I raise the front suspension about a 1/2" . this would also soften the springs a little and increase travel . would softening the front give more of and oversteer feel?

[blue2000s]

Originally Posted by jacabean

what would happen if I raise the front suspension about a 1/2" . this would also soften the springs a little and increase travel . would softening the front give more of and oversteer feel?

Assuming your car was originally set up by a competant tuner, your best bet is to either get new tires and/or a set of adjustable sway bars, as has already been noted.

[stephen wilson]

Raising the front ( say by adjusting a coil spring perch ) won't change the spring rate, you have to physically replace the spring to do that. Does this car have coil-overs? If so, experimenting with ride height would be much easier, though the alignment will have to be adjusted after each change. If anything, you'd want the front lower, relative to the rear, not higher.

As far as lowering changing the balance, I'm not a Boxster expert, but in general:
The C.G. will drop, and the roll center will drop by a similar amount, so the front roll couple, and therefore the handling balance, remains essentially unchanged.

Lowering will also lessen front weight transfer by a small amount, increasing the available traction of the front tires, but the magnitude would be small.

The only way to quantify the results would be to try and see.

Steve

[blue2000s]

Originally Posted by stephen wilson

As far as lowering changing the balance, I'm not a Boxster expert, but in general:
The C.G. will drop, and the roll center will drop by a similar amount, so the front roll couple, and therefore the handling balance, remains essentially unchanged.
Steve

As the suspension arms rotate the roll center moves relative to the CG. In a car with a strut suspension it's typically more pronounced than with wishbones or multilink.