I would like to know what my tire size options might be for my current wheels / rims ? The wheels / rims are Mercedes AMG. Is the "45" the only item that can vary on these rims ?
Near as I can discern that's not a factory wheel for that car in 1996 so there is no way for anyone here to know anything about it. So you're going to have to do some self-discovery. Pull one each of the front and rear and look inside the wheel, the inside will have a stamping showing the wheel size. Besides, this gives you a chance to check on the brakes and suspension anyway!
Take care and enjoy the ride,
Greg
__________________ When you learn from your own mistakes, that's experience.
When you learn from the mistakes of others, that's wisdom.
When you fail to learn from any mistakes, that's government.