Well, the tires are on and the first test drives are done.
Original thread.
The old tires (Kelly Charger 225/60/15) have been replaced with Hankook Dynapro A/S 235/75/15.
The Kelly's were 8.5 inches wide, 26 inch diameter, 795 revs per mile.
Hankooks are 7.5 inches wide 28 inch diameter, 760 revs per mile.
The Kelly's weren't far enough from the stock tires to throw the speedo off by more than 1 mph. The Hankooks are nearly the correct diameter for the vehicle.
Measuring the ratio with the tires on:
Kelly Charger: 3.65:1
Hankook: 3.52:1
With the stock tire: 3.55:1
The Hankook Dynapro A/S was rated 3rd best by Consumer Reports with above average (lower than average) rolling resistance. The ride noise was also rated to be above average. This is true. There is very little road noise produced by the Hankooks.
Facts and figures. This test is with a full tank of gasoline,
no additives,
stock tire pressures. This is on level surface, asphalt.
Kelly:
30 mph - 31 mpg
40 mph - 27 mpg
50 mph - 26-27 mpg
55 mph - 25-26 mpg
My test hill: neutral roll at 45 mph; 61 mpg peak (roll on at 45 mph, neutral at landmark)
Hankook:
30 mph - 37 mpg
40 mph - 35 mpg
50 mph - 27-29 mpg
55 mph - 26-27 mpg
My test hill: neutral roll at 45 mph; 82 mpg peak (roll on at 45 mph, neutral at landmark)
Threaded Mode
