standard jack strength

[mik]

scissor jacks are rubbish! , apart from the danger of them stripping bolt thread or collapsing, lifting 2 wheels at once would be taking your life in your hands, i recently changed a front tyre for a lady friend on a Hyundai sonata, the effort required to turn the jack handle imo was way above what most women could possibly muster and even some blokes .....i would love to see a jack road test on different cars, i`m betting 90% would fail the test for ease of use and safety.