Tire and rim compatibility

Ive just got my new tires in and realized my front and back rims are different widths.
The new tires are all 29.5x10x12, my front RIM is 12×6 and the back is 12×8, the back should take the new tire seeing as the original tire was 25x10x12 but not sure about the front because of the rim only being 6", it had a 25x8x12 on it originally. If any one knows about this or has delt with the same thing i would appreciate any input you might have.

Currently in the proccess of an S conversion from outkast.