You are reading a single comment by @skullandbiscuits and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
skullandbiscuits
I do, and have done many more silly things to it that make little financial or logical sense, but they make me happy. Your prompt has motivated me to do a big old update.
First up, the underbody rust. Thankfully the garage extensively covered it in their own blog, so I shall link to that rather than re-write here. In short, it was a mess but has been saved and is now considerably better than it came out of the factory: https://balancemotorworks.co.uk/2023/09/29/audi-tts-restoration-can-a-2010-car-really-be-this-rusty/
Having since posted about this on various enthusiast forums the general view is that the steel rear end of the Mk2 TT is a time bomb if not treated and driven in wet/salty conditions. The body shell is painted on the rear of the car so quite why Audi decided not to bother getting the robot to finish off covering the bottom we don't really know, but it's going to cost a lot of people a lot of money as these get older.
The upshot is that all rear end suspension components along with the front control arms were replaced, and in for a penny in for a pound we put Bilstein B12 coilovers on to replace the stock shocks and springs.
I was still getting some vibrations at motorway cruising speeds, so swapped the tyres for a new set of Goodyear Eagle F1 Asymmetric 6 and they have dealt with about 80% of the problem. There is still a slight vibration which now comes in at around 85mph (so not a speed I'm seeing regularly but rather more of a problem if I choose to track it). I think I'm going to need to find a shop with a Hunter Road Force balancer to take a look at the wheels to dial the last bits of this out.
Next up, the engine...