Wheels and Engine Tuner for the 328i

[jason]

While the F30 is relatively new, I have the itch for moar powah and better traction. Here are a couple of questions for owners out there:1. Anyone installed or considering to install an Engine Tuner. Kellerman Sport has a unit that boosts the 328i's, power and torque to 295hp and 310lb/ft respectively. Afterall there can never be too much power!2. What is the widests wheel and tire that can fit properly without the need for any mod to the car? I have read that 235 with 9j front and 265 with 10j back are possible with the proper offsets. The combination will be 2%+ upsize over the stock config. I am considering this to provide more confidence in the bends and more traction off the blocks. Plus to enhance the look as well. Thoughts?Jason