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  #1  
Old 07-19-2012, 02:16 PM
mrtosh mrtosh is offline
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Default Leveling my 2012 Sport. 33.5" or 34" tires?

Hey all, I'm looking to do either a TGC 1.5" or a HBS 2" level on my truck. I'm debating on which size tire to run. I've had 3 sets of Duratracs in the past and love them. I am debating on either a 285/60/20(33.5") or a 275/65/20(34.1"). The 275 actually weighs in 2lbs. lighter but is obviously taller and spins 610 revs per mile, where the 285 would be a bit heavier but spin 622 revs per mile. I know that the 285 will throw my speedo off more but I'm wondering is which of the two is going to be better for performance and MPG? I have 3.55's and don't want the truck to be hunting for gears on hills. If there was a tuner available I wouldn't even question the taller tire lol.

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Old 07-19-2012, 03:44 PM
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mrTosh, have you thought about Hypertechs speedo calibrator? It will work for us 11's and 12's in getting our speedo and new tire size to spec. Unfortunately, with the 3.55, going taller in tire size will affect the low end just a little bit. Our stock 20's you know are already at 32.99" so going to 33.5 might not be too bad. Your only talking a mile an hour difference.
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Old 07-19-2012, 03:55 PM
mrtosh mrtosh is offline
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I'm not too terribly worried about the speedo. More or less the performance hit.
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Old 07-20-2012, 09:37 AM
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I have the same setup with 34's. If you want the taller tires go for it. The 3.55's won't be searching and you won't regret it.
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Old 07-20-2012, 10:24 PM
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Ditto the 34's. I have them on my 355 geared truck. Performance is just fine. They look really good too, fill up the wheelwell more and raise your ground clearance.
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