illzoni
New member
I recently roadtripped from Tucson AZ to Murfreesboro TN in my 1987 Toyota 4Runner SR5 with the 22RE and 5-speed tranny. She did pretty well, averaging about 13.4 MPG with a significant load.
The load included me, luggage, two dogs, trailer, and two motorcycles. From the attached weight ticket (steering axle section held whole truck; trailer was on drive axle section...they're designed for semis) the trailer measured weight of 1580 and my calculated weight of 1872 puts the tongue weight at 292. I measured the sag with the trailer at 2-1/8". For the truck, I've figured my cargo was about 740 pounds, so with the measured weight of 4500 and tongue weight of 292, the 4Runner weighs about 3760. I figure the truck did well considering it weighs 3760 and was shouldering a load of 2320.
The truck ran at 69-70 mph steadily on flat or nearly flat ground without any headwind. Throw in headwind and/or grade and the speed suffered considerably. I did learn to live with running much higher RPMs in 4th to maintain highway speeds of at least 60 mph.
Odometer and speedometer error:
It's pretty easy to get an accurate take on the odometer error. As I drove I annotated the indicated mileage on the odo as I passed a mile marker along the freeway. Then I took another reading 70 miles later with the odo showing 63.35 miles elapsed, representing and error of 10.5%.
The speedometer error calculation isn't nearly as accurate. Best I can tell my GPS-indicated speed is 69 mph with the speedo showing 65, for an error of roughly 6%.
The load included me, luggage, two dogs, trailer, and two motorcycles. From the attached weight ticket (steering axle section held whole truck; trailer was on drive axle section...they're designed for semis) the trailer measured weight of 1580 and my calculated weight of 1872 puts the tongue weight at 292. I measured the sag with the trailer at 2-1/8". For the truck, I've figured my cargo was about 740 pounds, so with the measured weight of 4500 and tongue weight of 292, the 4Runner weighs about 3760. I figure the truck did well considering it weighs 3760 and was shouldering a load of 2320.
The truck ran at 69-70 mph steadily on flat or nearly flat ground without any headwind. Throw in headwind and/or grade and the speed suffered considerably. I did learn to live with running much higher RPMs in 4th to maintain highway speeds of at least 60 mph.
Odometer and speedometer error:
It's pretty easy to get an accurate take on the odometer error. As I drove I annotated the indicated mileage on the odo as I passed a mile marker along the freeway. Then I took another reading 70 miles later with the odo showing 63.35 miles elapsed, representing and error of 10.5%.
The speedometer error calculation isn't nearly as accurate. Best I can tell my GPS-indicated speed is 69 mph with the speedo showing 65, for an error of roughly 6%.
