Re: Shocks and tires Aero SportCombi - Saab 9-5 Bulletin Board - Saabnet.com


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Re: Shocks and tires Aero SportCombi
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Posted by bobc [Email] (#473) [Profile/Gallery] (more from bobc) on Sun, 13 Sep 2020 11:18:20 Share Post by Email
In Reply to: Shocks and tires Aero SportCombi, Rob Randall, Sat, 12 Sep 2020 13:12:32
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I put Bilstiens on my wagon and sedan and like them very much. they are sporty/firm so if that's not your thing you might not like them. THey are pricey. if you want a more sedate ride consider OEM shocks. I think that Monroe and KYB are also lower cost options but Im not impressed with either.

I considered koni but they have discontinued the shocks for the 9-5. I dont think you can get them anymore. I think that Monroe and KYB are also lower cost options but Im not impressed with either. I had monroes on my sedan and they are ... ok.

dont bother replacing the springs, they are a weak point and even new springs will sag in 6 months (I made this mistake on two of my Aero sedans). Just use the original springs and use spring spacers to get the car to the correct height

do bother replacing the bushings and links (and ball joints, tie rod ends while you are at it). these are likely worn and the sagging/shifting during driving is a big contributor to your cupping.

I am running General summer tires and general arctic in the winter. Im happy with general as a good quality tire, decent price.
- my last set was the G-MAX RS: very sporty and midling life.
- Currently running G-MAX AS-05: much longer life wear and I like them a lot. On my wagon I have these in 245-45-r17 and give a nice aggressive look and sharp handling. These were made in the USA, I liked that.

cupping is due to improper alignment, specifically toe. However there are some variables:
- a blocky tire (like the G-MAX RS) will be more vulnerable than a grooved tire (like the G-MAX AS-05)
- all tires, regardless of tread pattern, will cup eventually if toe is bad
- excessive camber will accelerate the effect of bad toe.

so a good alignment is very important. But keep in mind that an alignment only sets the static values. dynamic values will effect cupping as well. Worn suspension components will cause cupping even with a perfect static alignment.

Cupped tires lead to noise on the road ... but this is a symptom, not the problem itself. New tires will alleviate the symptom for a while but wont solve the problem. Leaky/worn shocks are part of the root cause but it's likely that your entire suspension (bushings, links, tie rod ends, ball joints, etc) needs attention.

_______________________________________ Mine: '08 9⁵ 2.3T SportCombi, Polar White '01 9⁵ Aero Midnight Blue (benched, busted piston) '00 9⁵ Aero Silver (RIP - transmission ) '99 9⁵ Cosmic blue Consult on: '11 9⁵ Aero NG '00 9⁵ Aero Mightnight Blue


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