52 Plate Ford Focus - wheel upgrade

I have just bought some 17" ripspeed alloys (multifit) for my 1.6 zetec to replace the zetec 15" alloys Can I just put these straight on ? or do I need to get wheel spacers - I
haven't picked them up yet so can't offer them up If I do need wheel spacers where is the best place to get them / Was just wondering if someone knew
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.