I'm looking to buy a set of jr11s for my punto and was wondering if 16x8j would cause and problems and what it would look like? Pictures would be great, thanks ?

a quick google found this

Wheel General Info
The ranges of possible values for tyres and rims of Fiat Punto

Diameters: 13.0'' - 18.0''
Width (mm): 155 - 215
Tire aspect ratio (%): 40 - 80
Smallest tire size: 155/80R13 79T
Largest tire size: 215/40R18 89W
Bolt pattern 4x100
Diameter: 15.0'' - 18.0'';
Width (inches): 6 - 7.5;
Offset (mm): 39 - 45.

So 8j et 25 would no doubt foul somewhere :bang: either on the arches or on the suspension components and cause issues when steering