Tyre and rim fittings

hi!
I fitted a S1 130-70-10 tyre on the back wheel of my vespa, and now I want to put a wider front tyre. I was thinking about a S1 110-80-10, so I want to know how wide I can go on the front, which is the wider tyre that fits the serial rim and if I put on a wider rim, will it touch the fork and the suspension?
Ivan