37" upgrade - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 01-18-2014, 04:24 PM Thread Starter
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37" upgrade

I am likley going to 37" next time i need tires. I read some feel you need to go to atleast 4.10 gears or better. My truck has the 3.55. I dont tow too often but do drive the city alot. The stock 20" are 34.5 if i recall. I was also planing just for the 2.5" leveing kit for now. I see some with 37's with some large lifts which would be great as thats the plan in a year or so. I wouldnt want the performace to suffer going to 37" tires. So what say you all?


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post #2 of 2 Old 01-18-2014, 08:15 PM
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I'm very pleased with my 37" tires and 6 inch lift. I threw on a 3.5" level kit with 35" tires when I first bought the truck, but I had a quick change of heart and switched to my current set up less than a month later. I have not noticed any decrease in fuel economy. I will be switching to either 4.10 or 4.30 gears in the near future.
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