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-   -   Were my tires throwing off my fuel logs? Help (https://ecomodder.com/forum/showthread.php/were-my-tires-throwing-off-my-fuel-logs-9575.html)

RandomFact314 08-08-2009 10:45 PM

Were my tires throwing off my fuel logs? Help
 
1 Attachment(s)
Hey I was looking at a profile on here where someone said that the tires on their car or whatever it was were 6% bigger then the stock so he calculated the 6% into the fuel logs for 6% addition to the miles driven. The tires I had on for a while are 10% bigger then the stock/ones I have on now. Was I suppose to add in that 10% :confused:
http://ecomodder.com/forum/attachmen...1&d=1249782310

Christ 08-08-2009 10:57 PM

Yes. :P You screwed up.

What you actually have to do is calculate the difference in rolling circumference, not diameter. You add in the % difference of the circumference, since you've gone that much further.

RandomFact314 08-08-2009 11:01 PM

Quote:

Originally Posted by Christ (Post 120327)
Yes. :P You screwed up.

What you actually have to do is calculate the difference in rolling circumference, not diameter. You add in the % difference of the circumference, since you've gone that much further.

So can you tell me what I need to do to my fuel logs for when I had those tires on? add or subtract from them and by how much?

Christ 08-08-2009 11:02 PM

If your tires were 10% bigger circ, you add 10% to the miles driven.

RandomFact314 08-08-2009 11:16 PM

Quote:

Originally Posted by Christ (Post 120331)
If your tires were 10% bigger circ, you add 10% to the miles driven.

So that chart is correct? I DO use 10% in this situation?
If so then for ex. if I drove 300 miles I should take 10% from 300 and add it to the 300, that being 330 and put 330 in the place of the 300 right?

Christ 08-08-2009 11:21 PM

:thumbup:

RandomFact314 08-08-2009 11:23 PM

Quote:

Originally Posted by Christ (Post 120340)
:thumbup:

are you 100% sure before I go and modify 9 of my fuel logs 4ever?

Christ 08-08-2009 11:26 PM

Quote:

Originally Posted by RandomFact314 (Post 120343)
are you 100% sure before I go and modify 9 of my fuel logs 4ever?

Do I have to support my statements with logic?

RandomFact314 08-08-2009 11:28 PM

Quote:

Originally Posted by Christ (Post 120344)
Do I have to support my statements with logic?

No, besides I cant argue with writing down a less-good FE than it was :D

Christ 08-08-2009 11:30 PM

It'll show better mileage... more distance on the same fuel.


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