Hey all.

After many months of looking at Various wheels I have finally found a set that I actually like and want, Enkei PF01's. I want them in either 17s or 18s, preferably 18s.

The yare available on ebay at the moment in the following sizes:

Front: 18x8 with +45 offset
Rear: 18x8.5 with +48 offset

and the 17s are available in:

Front: 17x7.5 with +45 offset
Rear: 17x8 with +50 offset

Offsets confuse me and I don't know a great deal about them. Will they fit though? If so, what size would I be better off with?
My fenders are already rolled if that means anything.
My car is stock height at the moment, however I plan on eventually lowering it just enough to seal the gap between the fenders and tyres (if that is going to effect anything).