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SportTrac Discussion
Engine & Drivetrain
Fuel Milage Question
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<blockquote data-quote="Jerry Gerner 2" data-source="post: 964993" data-attributes="member: 67360"><p>Depending on what reared gears you have the taller tires are throwing your speedo off so it won't read correct. 4.10 gears, it'll be off about 5%, 3.73 gears, it'll be off more and your RPM's will be higher putting more strain on your drivetrain. I have 33's on mine with 4.10's and I know when I'm rolling 60 mph on the dash I'm actually going 64-66mph. I plan on upgrading the gears to 4.56's when I do my SAS, SOA and run 35's to compensate for the taller tires, for now I'll deal with the speedo being off. :banana:</p></blockquote><p></p>
[QUOTE="Jerry Gerner 2, post: 964993, member: 67360"] Depending on what reared gears you have the taller tires are throwing your speedo off so it won't read correct. 4.10 gears, it'll be off about 5%, 3.73 gears, it'll be off more and your RPM's will be higher putting more strain on your drivetrain. I have 33's on mine with 4.10's and I know when I'm rolling 60 mph on the dash I'm actually going 64-66mph. I plan on upgrading the gears to 4.56's when I do my SAS, SOA and run 35's to compensate for the taller tires, for now I'll deal with the speedo being off. :banana: [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Fuel Milage Question
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