I’ve had mine fitted since 2012 and they are not corroded and still free to adjust.
Performance on road?
Not used it too much on the road, but when I have, the suspension was compliant enough for the roads about me. Have never tried them in the local McDonalds carpark.
Performance on Track?
They perform great on track, with plenty of adjustment to suit the weather and conditions.
Value for money?
Great value for money.
Would I buy again?
Yes I would buy again if I’m looking for coilovers.