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I have an 850 turbo - I drove an identical car two months ago in a dealer's lot, it was fitted with an IPD strut brace. I couldn't tell any difference with street driving and a run on the local highway up to 160km/h. Others may disagree of course, their style of driving may be different.
Recently for curiosity's sake concerning many people's alleged "lack of rigidity" of the 850 body which has been suggested as a possible cause of the harsh ride of the 850, I tried to ascertain which parts (if any) really did move. One of the tests was this:
Bolt a piece of stiff steel or wire rod to one brace, extending to the other. Hold it in that position with a bracket. At it's end, place a piece of modelling putty, such that if the rod extends under chassis distortion, it will leeave a mark on the putty. You get the idea - now just experiment by moving the putty and bending the end of the rod, to see if there is any linear or torsional movement in other directions.
I did this to many parts of the car. I didn't find any significant movement on my 94 turbo, even driving over the potholes here in Bangkok. Must say after reading about the supposed lack of rigidity of the 850 I was surprised. I now think the biggest contribution to the harsh ride is due to the use of low profile tyres.
Still looking forward to other peopl's comments !
KP
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