There's a reason they're cheap and it's not because they're a 'bargain'. cfoster, not to have a dig but to educate, copies are usually of inferior quality, Inovit are notorious for their shite build quality. Either save a bit more and buy some genuine Rays or look at something else, safety is important. Can you tell I don't like copies
And more important is to make sure you get the correct tyre size's as this can cost you alot of money if you get it wrong