Z32 recomended offset is +35 to +42mm ?

Z32 Wheel fitment bore is 66mm ?

 

Bore

What are my options if I purchased some alloys with a 60.1mm bore ? Can they be machined to fit, can you get spacers that work as adaptors ?

 

Offset

If the offset of the alloys is +20 ...does that mean it will stick out of arch further or tuck inside more...will it give more or less caliper clearance ?

 

Are Spacers used for alloys with a Higher offset, or a lower offset than the recomended ?

 

:confused:

The lower the offset the more the wheels come out of the arches and you get more caliper clearance .You need non hubcentric bolt on spacers with no centre bore just a flat face to fit a smaller centre bore than 66.1.With 17" wheels mine are 8" front with a 25mm bolt on spacer with a +35 offset wheel this is now a +10 offset.fit no problems.On the rear 9" with a 20mm bolt on spacer and a 35+ offset wheel this is now a +15 offset.rear tyres 245 front 225. The rear is close to the arch .Bolt on spacers are safe and dont strain wheel bearings .Bolt ons come in 15mm 20mm 25mm 30mm.You need non hubsentric spacers to fit smaller centre bore wheels .Most after market jap wheels 5x114.3 tend to have large centre bore eg 73mm to fit a range of cars .these are normally suplied with spigot ring to go from 73mm to 66mm or so on.If no spigot ring are fitted its not a problem as the wheel nut tappers locate the wheels to the hub /spacer.Hope this hasnt confused you.