there is nothing to try a 180/55.
You will have a bit more rubber on the road, and the geometry will not be too different
Bullshit .... OE tyres is 160-60-17 = 625.4 mm O/A dia
180-55-17 =635.30 mm O/A dia

That means the 185/55 will be 10mm O/A bigger thats nearly 2% so you gearing will change and then you need to find out if the wheel rim size will take a 185/55

You need at lest a 5.5 rim to take a 185-55 tyre so bad advice on 2 counts

see 998S it is very easy to find fault in someones post

if you want to ??????

so get of my back or just move on to the next post