Being that it's a 1 1/4 hitch, not a 2", does that mean there are more limitations on what can be towed? I'd assume between the weight of the vehicle and HP that this is the case, but is it something like a failsafe similar to diesel gas pumps being a different size? that is, if there is an attachment I'm looking at that requires a 2" hitch, should I assume that means my Kia can't handle it? I know this would be a rough assumption if indeed that is the case.