I have a 5th gen and know 5 mounted wheels/tires will fit. Also the guy that bought my 5 wheels/tires (mounted) this last weekend, we loaded them up inside his FJ, was tight, but fit
Little creativity and you shouldn’t have any issues
Sweet! Thanks! I won't have a passenger either, so that should help.
I remember moving with my 3rd gen about 4 years ago and I fit more than half of an 80" long couch in it, so I have to imagine a 4th gen can fit some tires. I just didn't want to get down there and be hosed...