Quote:
Originally Posted by TheManVan
Well as many of you know simply by upping your tire pressure you can lower your rolling resistance. But some people really never thought about it...
So I had the opportunity to do a before and after fuel economy study on two Honda odysseys. An 2008 lx and a 2002 ex, now since the 2002 ex has VCM its FE is much better.
2008....36psi = 15.7 mpg (driven by three people, who had never heard of Hypermiling)
2002....36psi = 21.7mpg same driving
Then I had the chance to check the tires and I "accidentally" filled them up to 42psi...the max sidewall is 44 so I think that 42 is a safe level.
AND...the results are in..after about 5 fill ups per van the averages are below.
Same driving habits and same exact routes.
2008....42psi = 18.37
2002....42psi = 22.79
And just last week I cleaned the EGR ports and valves on both.. the vans idle about 200-250 rpm lower and run cleaner..so I hope to see even more FE in the next few tanks!
Thanks for the info guys!  |
You should be aware that there have been reports of wet traction and wear issues when using elevated inflation pressures.
And you also ought to compare what you are running to what is stated on the vehicle tire placard - the sticker on the door that lists the original tire size and the vehicle manufacturers inflation specification. What is written on the sidewall as a maximum doesn't imply that it is OK to use for every application. It's a bit more complex than that.