D3 275 35 20 wider tyres?

[jonnypym123]

Hi Just needing some tyre advice feel like a noob asking this, I have d3 rs rims 275 35 20 tyres on at the moment, needing some new shoes before its mot mainly fronts, had already gone through existing posts and saw there was a link to a chart but I'm not clever enough to interpret it wanting to see if I can get wider tyres fitted using the existing alloys purely asthetic really, 285/295 maybe and what affect it would have? any input would be greatly appreciated