Sounds like you’re going to have to overhaul the brake calipers
On the other hand…
It’s a known thing that pad deposits can build up on the discs and cause this juddering
A good few heavy braking sessions from speed can remove these deposits and cure the problem till it comes back
Charge up the battery and it will do 11 miles no problem
I had the exact same problem about 2 weeks ago leaving my work car park and it managed 30 miles
I had everything electrical off that I didn’t need, but the windows misted bad and I was freezing by the time I got home!
Second hand alternator cured it
If the boot was full of water the it’s more than likely that your junction box is slowly dying
It’s a box in your boot that holds relays, fuses and computery things
If it does turn out to be that, then it’s an expensive fix. Although I’ve read that some people claim to have fixed them by removing and drying them out. There are also people on the internet who say they can fix them
All I can say is good luck with this one
Take it off, clean it out, put it back on, top up to the cold level with coolant
tie the hose up, out of the way, but higher than the tank - just to try and stop air getting into the system
The last person to have the wheel off probably just gunned the wheel nut on and over-tightened it. The nuts are supposed to be torqued up - don’t know the torque.
original jag nuts have an alloy covering which looks pretty to start with, but rust eventually develops beneath and swells the nut. I swapped mine for toyota solids