This is a common question, and I am in the same boat. Some will say it will rub, some will say it will not.
W/ a 10" wide wheel and a -24 offset, on 33's you will most likely rub on the plastic piece of the fender trim. All depends on what type of tire too....M/T, A/T?
I honestly do not have a solid answer as I am still researching all of this as well. customwheeloffset.com also has a gallery where you can look at all kinds of set ups and whether or not they rub. Take it with a grain of salt though because I personally feel people lie on there a lot.
But, this thread and forum have been very truthful and real when it comes to this. Go ahead in this thread, at the top right and search for "20X10" within this thread. You will see some questions/answers in regards to what you are looking for. Let us know what you decide to go with.