I'm sorry, but you won't get a good answer to the tyre question without a bit more information.
Firstly, you will need to give the full tyre size: the most important part of the information will be something like 195/50/17 (just an example - width/profile/diameter, if you are interested). That tells you whether it is the right physical size and is written on the side of the tyre (you could probably also get the information from etis, but that will be the tyres originally fitted, which may not be the same as the size it has now), but a couple of other pieces of information would also help.
There will also be something like 94W on the tyre wall; the first is the load rating, and is unlikely to cause a problem if the car is still on the size of tyres originally fitted, and the letter is a speed rating. In an ideal world, you'd never fit tyres rated for a lower speed than the max speed of the vehicle, but sometimes, with winter tyres particularly, it does happen (and, if it does, you'll have to be careful with speed, otherwise your insurance might disown you...not a problem in a country with 70 mph limits, maybe?).
Now, slightly more optional, to get the right tyres for you, really it would be helpful to know your priorities; you'd get a different recommendation if you wanted a sport tyre from an eco tyre, and probably a different one again if you wanted a 'middle of the road, compromise; tyre. (Alternatively, if you'd rather, state your priorities in terms of performance parameters grip, wet grip, aquaplaning, fuel economy, noise, life - note, that you won't usually get, even in an expensive tyre, a tyre that is better than all of the others on everything, so it really is a matter of your priorities).