wheel adapters ??? anyone tried them

[toxic_ape]

hey guys i have an 08 fiesta and am looking at getting some rims and fairly cheap. a friend of mine suggested getting wheel adapters to change the stud pattern slightly to fit a wider range of rims. however this also comes with the problem of pushing the wheels out and might gett rubbing, so just wondering if anyone knew if there would be a problem or tried doing this???? if they have whats the biggest offset u can use with addapters.

cheers adam