I took the ISF down to Cornwall at the weekend (180 miles each way). The Mrs drove the first leg, and I couldn't help notice that she seemed to be making lots of tiny corrections to the keep the car pinned bang in the middle of the lane.
When we swapped seats, I found the steering rather odd as well. When waited up with just a few degrees of turn left or right, all seemed fine. However, on the straights it felt jittery - almost like there was a numb point either side of dead centre.
I stopped and checked the tyre pressures - which didn't seem to far out. Unfortunately, the rest of the journey was twisty A roads, so I was unable to tell if the problem had been fixed.
On the return journey, I noticed the problem again, but also spotted that there was fair old bit of wind - cross winds.
I'm want to believe that maybe the car is just susceptible to crosswinds, but I'm really not sure. OR maybe we were imagining things!
I'd appreciate your thoughts.
Cheers.
Dav
http://www.lexusownersclub.co.uk/forum/forum/134-lexus-is-f-club/?do=add#