Koni FSD and IPD Sport Springs w/18" Pegasus

[Juan62]

Does anyone have this setup; Koni FSD, IPD Sport Springs, and 18" Pegasus wheels? I have the PEGS and now its time to change out the suspension (98 S70 T5-M).

[precopster]

No, but I just put Bilstein Touring with FCPs lowering spring package (from eBay) for my 850 wagon as well as 205/45/17s on front & 205/50/17s on rear and the handling improvement is immense. I also put new XC90 spring seats, new bump stops, and new sway bar links. At the rear new upper shock mounts.

The ride is somewhat stiffer than the 10-15% that I expected when comparing it to my wife's low mileage 850 sedan (75K miles) on stock 15" tires. I would say closer to 40% stiffer. I feel that this is a factor of the lower profile tires, stiffer springs and the Bilsteins.

It's not until speeds over 55-60mph are exceeded that the ride is approaching comfortable. That's the bad news.

Now for the fun bit. The car now HANDLES!! Even with a light load in the cargo area (120lbs) low speed corners are taken at almost twice the speed I was used to taking them at. High speed sweepers on freeways feel like going straight at the legal limit. Body roll is well controlled with the stock front sway bar and I now feel a need to corner hard just to see how upright and controlled she is. Can't wait to take her on a mountainous twisty run with no load just to see what she can do.

I don't know how this compares to Konis, though I would be curious to see how comfortable the lightest setting is. I've heard great reviews that the sway bars from IPD are an immense improvement on handling with almost no effect on ride quality so if I were to turn back time I might have tried upgraded IPD sway bars first (with suitable urethane bushes) then gone for upgraded springs.