Quote:
Originally Posted by Expert@ApexRaceParts
Hi there, welcome to the BMW club!
For an X-drive E90 sedan, I would recommend running a square setup with the same size wheels and tires at all four corners. Typically a square setup makes the most sense on an all-wheel-drive vehicle, as you will not necessarily benefit from a staggered setup with a wider rear wheel and tire. With a square setup, you will also be able to rotate your wheels and tires to maximize tread life.
Fitment wise, I would recommend the following specs:
Front & Rear: 18x9" ET30 with 255/35-18 tires
-Direct fit.
-5mm front spacers may be required with certain aftermarket suspensions, see below.
With a 18x9" ET30 wrapped in a 255/35-18 tire at all four corners, this setup will be a complete direct fit on a stock 325i X-drive E90. 255/35-18 tires will provide a significant increase in performance over the stock sizes, and the 18x9" ET30 wheels will give you a flush fitment both front and rear.
Here are a few examples of some E9x's running similar fitments:
If you have any questions, please do not hesitate to reach out! 
-Geirsen |
Thank you for your help! Ive decided to go with some VMR V703s wrapped in some Nankang NS-25s