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I have a 97 Ram 1500 with a 5.9L, auto, and I believe 3.55 gears. I currently have 32 11.50's on 15x10's. I would like to go to 33's but I am not sure if it will gear me up to high. I believe that the 32's that are on it now are actually smaller than what came on it from the factory. Right now at 70 mph I am taching about 1,800 rpms. Is that normal
 

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dude im running 36's with 3.55...and its not that bad but im getting 4.56 soon enough....but im sure you will be fine with 33's and 3.55
 

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i dont think your truck would have come with tires bigger than 32". the 1500's come with 245's which is in the high 20's in im not mistaken. i wish i could tach that low at 70. im up around 2200-2300 at that speed with 4.10's and 33".
 

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You will be fine with 3.55s and 33s
I also Ran 285/75 SSRs and 36 TSLs with my 3.55s with no problems till I could afford to upgrade to 4.56s

Ray
 
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