that all depends on which tyre you choose. i had 285s, then bought 265s in a different brand. the 265s were actually wider due to thicker sidewalls. i had no choice but to buy another set of 255s and sell the 265s after
also, when it comes to any system that uses sensors on wheels to create stability (attezza, abs, asm, traction control...) the only thing that creates a problem is having tyres that have different circumference. a bigger circumference causes less RPM of the tyre. the sensors on the wheels need to sense matching revolutions from each of the 4 wheels for the system to not be initiated. when one or more wheels does more RPM, the appropriate management system is engaged.
the width of tyre does not affect the system whatsoever UNLESS the width/profile ratio and subsequent circumference does not match.