As said, 225 fit best and usually dont require any work. 245s you can make fit by "rolling" the rear fenders. I wish I still had link to a DIY w/ pictures that explains how to do it, but I dont. You can take the car to a body shop and they can do it, or you can save money and diy. Either way, you wont need to go back to stock suspension.
Basically, rolling involves a hairdryer and wooden baseball bat. If you want to use a little caution to protect the paint then a towel is also in order. To begin, simply heat up the fender lip well using the hairdryer. This prevents the paint from cracking and also makes the metal easier to bend. Use the end of the baseball bat (wrapped in a towel or cloth if you prefer) and roll it along the backside of the lip, gently applying pressure. For best results keep the metal heated and dont work too fast. Eventually you will have covered enough area that grants clearance where there wasnt before.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>