Will I have rubbing issue if I put 245/45/18 tires with 3GS wheels on my car?
Yes I am lowered on Tein S.Tech springs with 25mm spacers in the rear and 15mm spacers on the front

thanks in advance

 

I'm running 3GS wheels with 15mm spacers in front and 20mm in the rear. I will probably be trading for 25mm spacers in the rear soon. So far, I don't rub under normal driving conditions. I only rub when I encounter big dips on the freeway and steeply inclined driveways. I think the rear can go 5mm wider without rubbing. But I am on 245/40/18 tires which is the recommended OE tire size. Any reason you are going with 245/45/18 instead? At that size, the sidewall may be too tall and the tire too big.

 

got a good deal for all 4
i still might try it out

 

Good luck. Remember to report back with your experience.