Google Maps crashing
I have a similar problem whereby the Maps app simply exits, usually within a few turns of my destination. This was happening on my older HTC sensation running V8.0.0 and is now (mis) behaving the same way on my new Samsung Galaxy S5 running V8.1.0. For this reason I suspect the app rather than the phone/s. From reading here, it seems that I am not alone but are the Maps people aware?
Re: Google Maps crashing
Have you cleared the app cache in Settings>Apps? If that didn't work, there is an update to Maps out now.