http://jsfiddle.net/ES4xG/8/ crashes most retina devices.
iOS Safari \"easily\" runs out of memory and crashes when using some -webkit-transform instruc
try to use this on the parent of the element you are transforming
-webkit-transform-style: preserve-3d;
-moz-transform-style: preserve-3d;
transform-style: preserve-3d;
and this for a better performance on you transformed element
-webkit-backface-visibility: hidden;
-moz-backface-visibility: hidden;
backface-visibility: hidden;