Renze
Elite Member
You are limited to 80kmh when towing in Europe. Or 90 for camper trailers because once a year towers usually stay 5kmh under the speed limit and trucks have a margin on their speed limiters so they drive 85kmh. This exception is made in Holland to stop truckers from being provoked to overtake and hinder the fast lane because a guy in a small family car is towing under the speed limit in the truck lane.
In Germany you are allowed to tow at 100kmh when the loaded trailer weight does not exceed the cars loaded weight and the trailer axles are equipped with shock absorbers.
The reason i asked about body roll is because the axle body forms a torsion bar between both suspension arms, and the bending of suspension arms is giving roll stability, while vertical travel is only limited by the leaf springs or air bags.
Axle less suspension is what it says on the tin: springs on both sides of the vehicle with no connection between them to give roll resistance.
Torsion axles are the same thing, but when i bought my dump trailer (and old 3 way dump bed of a truck, put high above the ground on a manure spreader undercarriage) the crosswind and high center of gravity caused a consistent sway as soon as i passed 70kmh. I drove 75kmh to not hinder trucking too much but it wasnt comfortable. Not even with my neighbours 4000 pound SUV pulling this 6000 pound load, though my trailer tracks like a freight train when loaded to 8000 pounds and my 3000 pound Volvo pulling it.
From my experience in the business i would want to test before buying, on an enclosed trailer that catches a lot of side wind, or with a high center of gravity.
In Germany you are allowed to tow at 100kmh when the loaded trailer weight does not exceed the cars loaded weight and the trailer axles are equipped with shock absorbers.
The reason i asked about body roll is because the axle body forms a torsion bar between both suspension arms, and the bending of suspension arms is giving roll stability, while vertical travel is only limited by the leaf springs or air bags.
Axle less suspension is what it says on the tin: springs on both sides of the vehicle with no connection between them to give roll resistance.
Torsion axles are the same thing, but when i bought my dump trailer (and old 3 way dump bed of a truck, put high above the ground on a manure spreader undercarriage) the crosswind and high center of gravity caused a consistent sway as soon as i passed 70kmh. I drove 75kmh to not hinder trucking too much but it wasnt comfortable. Not even with my neighbours 4000 pound SUV pulling this 6000 pound load, though my trailer tracks like a freight train when loaded to 8000 pounds and my 3000 pound Volvo pulling it.
From my experience in the business i would want to test before buying, on an enclosed trailer that catches a lot of side wind, or with a high center of gravity.
