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Old 01-07-2011, 05:29 PM
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autobred autobred is offline
Dodge Ram Forum Senior Member
Join Date: Aug 2010
Location: Southern Md
Age: 47
Posts: 727
Gender: Male
Vehicle: sold* 10' R/T... 13' R/T
Trim Level: R/T
Color: black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Id have to agree with RT, and you being a 4 by 4 you might want to do a slightly taller tires down the road, and the 4.56 will definitely be a plus, either way its a win win. I have 4.10 gears stock and I achieve the steeper rear by swapping out the 33" oem tires to 29" which gives me approx. 4.56 or so. Stock 33" tires Im buzzing around 2000rpms at 70mph on top gear. With my 29" tires Im buzzing around 2250rpms at 70mph so its not ridiculous by any means but the benefit is great. Heres a calculator that I fool around with, maybe it could help, maybe not. If I was in this position, if I was planning to stay with 33" oem tires at the minimum and possibly going larger in the future Id go with the 4.56 but if I was planning to stick with stock tires..then you can always get shorter tires in the future for occasional racing Id go with the 4.10 IMHO

Last edited by autobred; 01-07-2011 at 06:05 PM.
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