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Old 09-26-2014, 10:52 PM   #1
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taller tires ???

I have 265/70/17 P rated tires that I'm going to replace with some LT tires ,
would taller tire's tow better like 275 or 285 ?

Thank you
mike
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Old 09-27-2014, 12:06 AM   #2
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Taller tires have no advantage, and in reality are a disadvantage. The axle ratio and tire size have a direct correlation.

I increased my tires from 245/75 to 265/75 which was about a 3-4% increase in circumference and that increase essentially decreased the final drive. There for my 3:73 doesn't have as much pulling power as before.

Now 3-4% isn't enough to be concerned about with a Duramax, but the point a taller than OEM tires have a negative affect on performance.
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Old 09-27-2014, 04:36 AM   #3
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Stay with stock sized tires.As Clubhouse stated,the gear ratio will change with taller tires.Your trucks driveline components were designed with stock size in mind.Cant remember what size tires I ran on a 97 dodge 2500.I went up one tire size and promptly(within 25000 miles)burnt up 2 transmissions.The trans rebuild shop stated it was probably from the taller tires not letting the transmission operate in the rpm range it was designed for.For my money stay with the size tires posted on a placard on your truck somewhere.Not worth the risk.Scott.
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Old 09-27-2014, 05:45 AM   #4
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Don't try to out engineer the manufacter .You see people doing all the time to get more horse power , which is easy to out do the factory , what they don't see is that it wont last anywhere as long after they out smart the big money engineers .
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Old 09-27-2014, 06:36 AM   #5
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Thank you , I will be staying stock size
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Old 09-27-2014, 07:01 AM   #6
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Most every truck manufacturer offers multiple wheel sizes. I wonder if the overall tire circumference remains the same on these different options by thinning up the sidewall? I also see plenty of " jacked" trucks and SUVs on the road. Never towing anything, though.
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Old 09-27-2014, 07:19 AM   #7
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Taller tires (on the same size rim) introduce more sidewall "squirm" it will also effect your hitch height..
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Old 09-27-2014, 07:33 AM   #8
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Quote:
Originally Posted by KiltDog View Post
Most every truck manufacturer offers multiple wheel sizes. I wonder if the overall tire circumference remains the same on these different options by thinning up the sidewall?
yes
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Old 09-27-2014, 02:50 PM   #9
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Mikebris,

Might find the "Tire Size Comparison & Speedometer Difference" calculator link in the following thread interesting.

https://www.jaycoowners.com/forums/sh...ize+calculator

Bob
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Old 09-27-2014, 10:57 PM   #10
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Tire height is very important. We had a 350 chevy and I went from 265x16 to 225x16 for summer towing. I noticed better towing performance and fewer down shifts. When camping season was over I went back to the taller tires for hunting season with it's snow and muddy ruts.
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