I would check the bottom balljoints for play, but if the tyres are that worn it will make the car pull.
Put the baldies on the back and test drive it, if it's ok then perhaps the problem was the tracking / camber

******** VAG Tech Advice *********
If it dont run right cold, change the blue temp sender.
If it aint got a spark, check earths, coil connections.
If it idles like ****, clean the ISV and throttle body.
For all other problems, use a hammer