Originally posted by ShortT
Correct me if I'm wrong, but isn't the mph calculated as an average of your speed over the last 100 feet? So you can't really use it to compare two different times unless there is a significant difference right? I've seen cars that have been more than 5 or 6 tenths off on ET and still only been 1 or 2 mph different in trap speeds... so traction was definitely the major factor here. Again, correct me if I'm wrong.
Yep, you're correct. Not sure if it calculates average speed across that 100 ft or if it calculates the time it takes you to get across that 100 ft to come up with your mph. And in this case, the significant difference was the tires. Like I said before. ET only shows how well you hook up. MPH is going to show how well your car is running and give you a good indication as to how well the car is running. More traction does not equal to more mph.