Bought my IS200 Sportcross just over a year ago and in the very full history was a receipt for the replacement of warped discs, being the last work done on the car. After running it for about 1000 miles I noticed a judder coming up the steering wheel when braking from 40mph down to 30mph. This got steadily worse so I got the discs replaced, new pads etc. This was good for another 1000 miles but then the judder returned. My mechanic's diagnosis was warped hubs, or at a very outside bet, buckled wheels. I got him to fit s/h hub flange assemblies I sourced and new discs my mechanic managed to wangle free from his supplier. 1000 miles later we were back to square one. It was then I started reading this string, and with my mechanic suggesting the only path open to me was to fit new Lexus hubs, bearings and discs at a cost of about £800, I decided to live with it. It wasn't too severe and as time went on I felt that it was actually getting better (or perhaps I was getting inured to it). Drove it on holiday to the Outer Hebrides in May and it was fantastic. At its MOT in July all that was needed was a lower ball joint replaced. 1000 miles after that was done the judder has returned with a vengeance but oddly it is now from 70mph down to 60mph and is much more violent. I'm just wondering if this ball joint suggests anything and if it is safe, particularly with winter just round the corner.