But software is much more complicated. If I put aftermarket suspension in, it&#x27;s pretty unlikely that it will significantly screw up my brakes. But with software, it&#x27;s a lot harder to say what affects what, especially considering how many cars have a single computer that handles both critical and non-critical tasks. A media player mod could very well screw up the brakes by hogging system resources or crashing the computer. If my insurance refuses to pay out after a crash on account of that, do <i>I</i> have to prove my mods to be safe?<p>NB: I have almost no idea how liability and insurance works in the US.