gear ratio
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New User
Joined: Mar 2004
Posts: 1
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From: Jackson CA
gear ratio
I have a 79 F150 4x4..it has 4:10 gears and get really bad gas mileage..I was told that if I went from a 31"tire to a 33" tire it would increase my gear ratio and raise my fule mileage..I allways thought the larger the tire the worse the fuel mileag which is correct?
Posting Guru
Joined: Mar 2003
Posts: 1,253
Likes: 2
From: spartanburg, SC
welcome to FTE.
"I was told that if I went from a 31"tire to a 33" tire it would increase my gear ratio"
no it won't, tire size has nothing to do gear ratio.
you still have 4.11 gears weather you have 31" or 33" tires.
going with a taller tire should help your mileage though.
"I was told that if I went from a 31"tire to a 33" tire it would increase my gear ratio"
no it won't, tire size has nothing to do gear ratio.
you still have 4.11 gears weather you have 31" or 33" tires.
going with a taller tire should help your mileage though.
