Another wheel question !!!!!

[ATL e30]

So im looking on Tire rack and i see some OZ wheels I like
Offset: 37mm Backspacing: 5.47" Bolt Pattern: 4-100
Rec. Tire Size:205/50-16
Weight: 21.2lbs.
The same wheel but for a Volkswagen Rabbit is $30 cheaper.
Now for the Question if I go down a size the off set is different by 1 how much would that effect me would i need a spacer or would i still be good to go?
Does anyone know hoe far you can go without using a spacer ?

[Wh33lhop]

That doesn't seem right that the only discrepancy is the negligible offset difference, I doubt that is the ONLY thing different between the two wheels. If I were you I would investigate further.

That said, if they are otherwise identical between the two wheels 1mm of offset will likely not make an appreciable difference, although it's possible the other wheel will not have enough caliper clearance or something.