Full Lock Stalls Car? BP Legacy 3.0 R

[TonyD90]

Hello Everyone, 

New development on my car today when trying to reverse park in a car park. As I get close to full lock in either direction the speed at which I am traveling becomes notchy. The steering doesn't become notchy, its the motion, like I had a lump on the tyre. If I actually go on full lock its enough resistance to stall the car, even with some revs. So my conclusion is something is mechanically jamming up. 

 

My first thoughts were CV joints but after reading some posts a lot of people are talking about the front diff being the problem. I'm not sure how my cars front diff is set up, is it some form of LSD? Because I struggle to believe an open diff could cause this. What are your thoughts/ideas? And how would you go about diagnosing it? 

Any and all help super appreciated. 

Car is a Legacy 3.0 R Spec B Estate 6 Speed Manual. 

 

Cheers, 

Tony