In this case, if you cannot tilt 45 degree, you will never be
able to do a 90-degree position to turn even if you full turn the
steering wheel. You are kind of restricted by the angle you can
turn, and can turn steering wheel as much as the angle allow
only.
This type of case, you will have to do a few reverse & forward.
This mean you have to be handly with your forward and reverse gear.
What you do is to do very gentle 20 degree reverse or as much as
the angle allow, move the tail in to the space, the trick is yoru
car tail corner position . You just have to move forward, and do
another 20 degree reverse or as much as angle allow. Frankly in
some narrow car park, even experience driver , may need as much as
3 reverse to do it, but to other it may seem very fast, because
they forward and reverse fast as they are so familiar with their
gear and they are familiar how far they can push each reverse angle
each time. For you take your time, check to ensure the gear is in
reverse or forward carefully, and do it slowly, you will get faster
with each time.
Don't rush it, i have seen people accidently mess up, putting the
wrong gear reverse instead of forward, and bang right into a
wall.