IMHO, not nearly enough
tow vehicle mass, regardless of tires

Following this logic, I'd be better off using an M-1 Abrahms... :-))

The Passat is a fantastic tow vehicle. With a curb weight of around
3800 lbs, all-wheel drive, stiff suspension, low CG, and a relatively
short coupling between hitch and rear axle, it's a great compromise
between tow vehicle and every day transportation. And with highway
mileage of about 25 (versus what - 16 for the Dodge?), I can still
afford to take a tow when I get to the airport! (and no, I don't really
tow at 75mph, but it is [was] no problem if I needed to for short
bursts with the old setup).

P3