With no other loading. We put a tool chest on the trailer with the car, and then load another thousand pounds of gear in the back of the truck. Then we tow halfway across the country. That's not a recipe for keeping a 4L60E happy. My team captain's GMT900 C1500 Suburban is on its second 4L60E.A half ton will tow a bimmer easy enough,
If the purpose is for towing to track days, and you're only taking a handheld tool case and maybe a pop-up tent, then yes, a half-ton is fine. But that quickly changes. One of my teammates towed his Mustang to Barber from Dallas with a 4.6 F150. We made it there and back, but it was struggling, and the heater core cracked in the last few hours. He got the heater core fixed and flipped the truck to buy a F250.
If you can start with a larger truck, do it.