What spacers did you need for your wheels?

[dmcessential]

Guys,
Just fitted my new wheels at the weekend and am getting a little bit of rubbing on the front when going down dips. The rubbing is at the top of the arch where there is a screw for the arch liner.

Car is a 2003 5.5
Wheels are 8.5 inch wide
Offset is 45
Got about an inch of gap wheel to arch

I was recomended to fit 10mm spacers all round, but feels like I might be able to get away with 5mm on the front.

Can anyone with this type offset and wheel size let me know what they ended up with.
Cheers everyone