Thats where Im on the fence. If I go with a used trailer from the mid 2000's, most of the ones Im looking at have surge brakes and come in at around 3000lbs. I wouldn't put the cost into converting those to electronic and Id be more than comfortable towing them.
Hence the comment that its not...
My point is more, brakes are required over 3000lb but those can be surge brakes which obviously don't use a TBC.
I would feel more than comfortable towing 5000lb with surge brakes.
This comment has me curious since Im on the fence about a TBC.
Most states require brakes on trailer with a dry weight over 3000lbs. Thats just brakes on the trailer though, nothing to do with the TBC. The brakes can be surge brakes.
Talking to my local truck shop and friends with campers...