Newbie T Sport Owner

[JRCorolla2]

Hi All,

I've just become the owner of a T Sport and would like to introduce myself to this community, I'm sure I will be picking your brains quite often!

I've a couple of newbie questions;

1) will 17 Inch alloys running 225/45/17 with an offset of 30-40mm fit on a completely standard corolla t sport? without any rubbing?

2) if i run the wheels with the above stated size then can i still lower it 40mm?

3) Also, any ideas on good back boxes that wont deafen but also sound a bit nicer than the standard box?