Forums arent that great for E92's. I used to have one.
Is this petrol or diesel? Petrol you wont get much more out of it, but Diesel Turbo can see it past 500BHP.
You can go over the top of the strut brace and between the front seats FYI too. Like this you can get 4 x 19's with tires in it.
Cant remember if it squeezes under the brace though.