[SIEBS]

I am buying this G8 tomorrow and it has the 18" alloy wheels, and i know that the bolt pattern is 5x120 and 18x8 and i think the offset is +48 the car just had all new tires put on. so what my question is can i put rims on the car that are 18x8 with an offset of +42 and still be able to use the tires that are on the car? Any help is much appriciated.

EDIT: Here is the rims http://www.tirerack.com/wheels/Whee...lse&filterNew=All&filterWeight=All&sort=Price