Dont necessarily need spacers, Ive got 172 alloys on my 1.2.. had to take the rear archliners out..
The rears are about 3mm off the rear shock covers, But i think theyve worn through now lol !
depends on the tyre wideness, Im running 195, if it was 205mm wide i think you'd need 10mm spacers.
(ive got some im not using PM if you want them)