It will depend on the offset of your wheels. The 17's that were on my old car were +35

Thanks for that :D .
I know when I got the wheels the offset was different from standard, so I will have to check that. They may have been +35, but I`m not too sure. :o
Regards,
Ian.

do the 4pots make that much difference witht the standard master cylinder etc?

Yeh loads but I eventually used some drilled/grooved discs which also helped