rims and tires will swap without any problems. i run 135i 264's on my 28. Yes the performance brakes will greatly increase stopping power both on and off the track. their increased size makes them helpful on a track since they won't heat up and fade as fast.
3 stage manifold, Mapleridge headers, AA tune, Injen intake, 135i exhaust fitted to 128 mids, blackline tails, Depo headlights w/ 8000k LED angel eyes and xenons, 8000k xenon fogs, Lowered on eibach springs, m3 lower control arms, 264's in anthracite with a red lip wrapped in hankook v12's