My towing "faster" experience.
I was just reading a closed thread on trailer tires that can go faster. I wanted to reply, but it was closed. This also probably has been discussed, but towing faster doesn't mean your going to get th...
Forum Discussion
cmeade wrote:
Years ago I attended a safety seminar hosted y CHP. They emphasized tire speed ratings of tires and stopping distances. To meet FMVSS standards for vehicles to be sold in the US they must meet certain braking requirements. Am probably off on the exact figures but tractor trailer at 80k lbs it must stop 55 to 0 in about 190' or less. From 65 to 0 it increased to 400' with the same combo. From 75 to 0 it increased to 850'. Something about friction coefficiency and heat. They said these figures were the reason the CA legislature would never increase the 55 mph max trailer speed limit. For those towing over 70 mph I think a minor traffic incident at 55 mph becomes a major disaster at 70+ mph. JMHO.
K= 1/2 mv^2.
Kinetic energy to be dissipated by braking = 1/2 times mass times velocity squared.
Braking distance, not including reaction distance, will increase with the square of the velocity.
(65/55)^2 = 1.4 times the distance
(75/55)^2 = 1.9 times the distance
(80/55)^2 = 2.1 times the distance
