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Archive for August 31st, 2006
Tire Affecting Fuel Economy
Posted by liz on August 31, 2006
IF YOU PUT BIGGER TIRES ON A KENWORTH, WILL IT AFFECT YOUR SPEEDOMETER AND MAKE YOUR TRUCK GO FASTER? IS THERE AWAY TO HAVE THE TRUCK CHECKED OUT IF IT DOES AFFECT THE SPEEDOMETER? I NEED PROOF IN WRITTING WOULD I BE ABLE TO GET THAT? THANK YOU
Putting larger diameter tires on any vehicle will affect the speedometer and odometer readings. If you know the revolutions per mile for the original tires and the larger tires, you could calculate the speed differance. If they are already on the vehicle, you can also drive down the highway, set the speed at 60 MPH and measure the time it takes to drive between mile markers. One mile at 60 MPH takes 60 seconds. If it is not 60 seconds between mile markers, the differance is the speedometer error.
Fuel Economy Testing
Posted by ZORICA on August 31, 2006
Please provide standards and procedure used to field test tires for fuel consumption performance. Dealing with truck and trailers. Trailers 53′ long and 28′ doubles and triples.
This isn't a questions that can be answered in twenty five words or less. The SAE (Society of Automotive Engineers) has developed procedures for testing various components of vehicles for their affect on fuel economy. The Type III test is generally accepted as the the best test for tires. To find out how to run this type of test, I suggest you visit the following website http://www.sae.org/technical/standards/J1526_198706.