Title should have read: Can I open the brakes any wider when removing the wheel?

I'd like to switch from a 23c to a 25c tire on my road bike but I don't think they'll fit between the brake pads when removing/installing the wheel. I have Ultegra brakes and the existing 23c tires just barely fit between the brake pads when I remove the wheel after lifting that little lever. I think the 25's may be too wide. So, is there any way to widen the opening when I lift the lever without changing the width when the lever is closed?