xzeror;1974834 said:not crazy about stretching tires. ill maybe skimp down a size or two depending on the wheels. Back to looking :/
Curious why you want to run with that offset. Super deal on rims? my 18x9.5 rears have a +38 offset and they are right on the cusp of being too far out on the fender. If I hit a really big dip at high speed, the edge of my quarter fender will touch the outside lip of my tire. (not what I consider desirable)
And I only have about a 1" drop on my car. If my wheels were +15, I think that I would be riding the rubber (haven't tried this, but I think the math would prove out.