Hi James,

I had same problem 1 month ago. I had some cheap new tyres at front for 6 months and 1 day it just started pulling left quite aggressively. I checked tyre pressure and it was at low 20psi, that was strange. Pumped up to 35psi put next day again low pressure, so tyre was ....
What I discovered after removing wheel was that tyre was totally worn out from very edge of inner side ( like I would have extreme camber adjusted). I have absolutely everything new in my drivedrain so at the begginning problem was strange, but pulling shock pump stop down releved reason why wheel has worn out like that. My 6 month old top shock febi mount metal was cracked in half, half was holding and other half was broken what made shock to move under angle. New mount and problem was solved.
As my 300ce runs on amg shock/springs then it needed also lower style pump stops, but I had the highest installed, so I think that made my mount to crack.

I hope this helps you.