Hmm I don't know man, all I know is every little bump I hit I was bottoming out on them and it was ruining my tires quick so I sold them and they were 245/35/20. I bought the rims/tires on ebay and I guess I just took their word they were the right offset..
I think I'll pass on rolling the fenders and just get a narrower tire unless there's a downside to it?