The purple one
Well-Known Member
I put on some 235 tires on my 93 and now I think the speedo is about 2 mph off. Is there a way to find out how many mpg I am getting without new speedo gears? Thanks
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Did my MPG go down?
- Thread starter The purple one
- Start date
triumphrider-1
Well-Known Member
Whats the stock tire size?
- Joined
- May 14, 2009
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- 5,397
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- Canada
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- 2005
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- 4.0 V6
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- Automatic
- Total Lift
- 2"
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- 31"
- My credo
- The fun begins where the pavement ends
And what is the aspect ratio/rim size of the 235's?
The purple one
Well-Known Member
I do not know the stock size. I will lookit up on Mon. when i get it back.
94 lngbd
Well-Known Member
a 93 2wd should be 225/70r-14
MrE_Powers
Well-Known Member
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- Aug 6, 2007
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- 1993,1997,1984
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gps will help get you accurate mpg
LearjetMinako
Well-Known Member
There is a 9~10% difference in tire size. So when you do MPG calc, add 9~10% of the figure number to the total. Ex. If you got MPG= 200, 200 x 1.10 = 220 MPG. This should also correct the Speedo as well. Instead of 65mph, 65mph (indicated) x 1.10 = 71.5 (corrected indicated). A GPS should confrim the results.
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