Subject vehicle : 1998 S90, 73,700 miles.

Both front tires have both (inside and outside) edges feathered. Swapped fronts for rears and criss-crossed, now the rear tires (now on front) are showing the same signs. This happened with the previous tires as well and I am getting a "drump, drump," sound whilst rolling at low speeds. Tires were recently re-balanced before the rotation to eliminate balance issues.

I am 100% certain it's the suspension. I rotate tires every 5,000 miles. The car handles well and feels fine at speed although not as smooth as it could be. No noticeable play or rhythmic vibrations.

Air pressure in tires is 32 psi and there is no play that I can find by shaking the lifted tires 3-9 or 12-6.

Thinking it might be lower control arm bushings but thought I would ask the Volvo 900 front suspension brain trust.

Your opinions are appreciated.

Thanks, DEWFPO
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1998 S90 071,245 and 1995 964 154,100