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This happens to me where it sounds like something falls into the bed. The vents on the back of the cab have these plastic covers that pop out with air pressure changes. That’s what was making the noise for me, it was hot outside and I was blasting the AC. You can see the flap move if you are looking at it and shut the back door.
Yeah I will probably be adding about 20 lbs per tire. I didn’t think about that because I was so wrapped around making sure my ratio wasn’t completely messed up. Lol. yeah I was planning on buying a calibrator for the speedo when I got the tires. Really just trying to decide between 32 and 33 at this point.
Hey everyone, I’m looking for experience upping your tire size. I have the 6 spd 5.3L with the 3.42 gear ratio and the stock tires are 31.1 inches (255/70/17). I am looking at changing to 33 inch tires max. Im wondering what the experience with the loss of towing power, change in MPG, or the amount of “get up n go” you lost with this. I’m guessing since my effective gear ratio stays around 3.31 and that’s still bigger than the 3.23 that also comes with the 1500, then I may not notice a huge difference. Whatcha think?
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