37" tires and 20" wheels
02-05-2008, 03:53 AM
#1
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37" tires and 20" wheels
I have a 5.4L 4x4. Im thinking about going with 37" tires and 20" wheels. My only concern is how much will MPG go down? Im running 35's with 16"s right now. Will I need to change my braking and gear ratio to accomidate the tires and wheels? Thanks!
02-05-2008, 02:41 PM
#3
Inaugural TOTM
New gears would highly be recommended if you're going to go higher than 35's. I'm running 35's on my truck right now and I regeared form the stock 3.55's to 4.56's and regained every ounce of lost power. 
