Good evening, dear elch vernatics (to whom I count myself ) As well known, I own a 2010 Volvo S80 D5. Now I have been having problems for quite some time, my steering wheel trembles (if sun blind is wobbly down it lightly, so there is some disturbance in the vehicle) and there is a trembling when driving, which can be felt in the steering wheel. In the big Inspekion last month the wheels were freshly cleaned out. Then it went short-term (vllt. was only imagination) and the problem occurs again. At the time are 19″ 245/35 installed, nevertheless I had the problem with the winter tyres already. Does anyone have any idea or plan about it could lie? If the above mentioned error is cleaned up, I would like to lower my Volvo in the coming year, of course only with feathers. The main question is, I have a 4C driving station installed, is that is so easy to lower with the Volvo manufacturer? If someone has experience with engine tuning(performance increase by chip), if you like Master Tiethof trust or screw. I don’t want to keep up on the company.