If the car is still under Nissan Warranity then reckon he's best trying to get it sorted properly rather than the quick fix approach.
What has your friend got to loose from trying....nothing.
Tim, your friend should always listen to the elders.
I think they look nice and should go well with the UY Sarnie. Why dont you cut one out from the picture and offer it up to see what it looks like. Black rims does seem to suit UY nicely
I happy with mine but then I do like quite alot of bass. I suppose it's partly down to which type of music you listen to. I assume you have a sub woofer too.