245/45/17s are just about the max you can stuff under an early A without major surgery, with some being easier than others. Easier being subjective.

You will need to roll fender lips. You will most likely need to trim bits and pieces of sheet metal and you will have to pay very close attention to backspacing.

For the record as the rear axle goes up and down the tire top can go in and out and the axle center line goes fore and aft.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.