Tire pressure question
01-30-2017, 08:39 PM
#1
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Tire pressure question
I bought some BF Goodrich K02's for my 05 2500 4x4 and the ride is kind of rough. I'm guessing its due to the tire pressure itself, so what I am looking for is the exact tire that came on this truck stock in 2005. I need to know the load range of that tire to match that exact load range on the K02's. When I bought this truck in 2015 it had 285-70-17 Nitto Grapplers on it. I never knew what came with it. When I eventually replaced the grapplers with K02's I put 285-70 17's on it.
I have the load range data for the K02 tires based on 5 psi increments to the tire load range changes for each tire pressure. I just need to know what came factory on this truck back in 2005. To find the stock load range at 35 psi for good ride quality based upon the stock tires.
There is minor shake in the steering above 50mph or high rpm's.
I have the load range data for the K02 tires based on 5 psi increments to the tire load range changes for each tire pressure. I just need to know what came factory on this truck back in 2005. To find the stock load range at 35 psi for good ride quality based upon the stock tires.
There is minor shake in the steering above 50mph or high rpm's.
K02 psi increments vs load 5psi increments
35 1750 40 1920 45 2085 50 2275 55 2400 60 2550 65 2680
K02 psi increments vs load 1psi increments
35.00 1750 36.00 1786 37.00 1820 38.00 1854 39.00 1888 40.00 1920 41.00 1954 42.00 1988 43.00 2021 44.00 2053 45.00 2085 46.00 2124 47.00 2162 48.00 2200 49.00 2238 50.00 2275 51.00 2302 52.00 2327 53.00 2352 54.00 2377 55.00 2400 56.00 2431 57.00 2461 58.00 2491 59.00 2521 60.00 2550 61.00 2577 62.00 2604 63.00 2630 64.00 2655 65.00 2680
35 1750 40 1920 45 2085 50 2275 55 2400 60 2550 65 2680
K02 psi increments vs load 1psi increments
35.00 1750 36.00 1786 37.00 1820 38.00 1854 39.00 1888 40.00 1920 41.00 1954 42.00 1988 43.00 2021 44.00 2053 45.00 2085 46.00 2124 47.00 2162 48.00 2200 49.00 2238 50.00 2275 51.00 2302 52.00 2327 53.00 2352 54.00 2377 55.00 2400 56.00 2431 57.00 2461 58.00 2491 59.00 2521 60.00 2550 61.00 2577 62.00 2604 63.00 2630 64.00 2655 65.00 2680
01-31-2017, 09:57 PM
#4
Yes all stock tires from factory are E rated and 80psi. If you run any tire on your truck like that empty as in not loaded down it will be a very rough ride and run the center off the tire. Does not matter what tire. Most for daily driving run 60 psi up front and 50 psi in back.
For a Dually again 60 psi up front and 40 psi in back again empty.
Some even go 10 psi or more lower psi.
For a Dually again 60 psi up front and 40 psi in back again empty.
Some even go 10 psi or more lower psi.
02-01-2017, 11:10 AM
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So what exactly is a good tire pressure on a 2005 cummins 2500 4x4 with these K02 tires, assuming I am running mostly unloaded for daily driving. I'm not sure if the tire size matters, but they are 285 70 17's. That seemed to be the biggest I could go without any inner fenderwell rubbing on sharp turning.
Here is my exact tire data:
Here is my exact tire data:
02-01-2017, 11:54 AM
#7
DTR Detective
I don't think many here would have an answer since they are all running E rated tires.
Me? I run 50F 40R, but I also have E rated 35's which can run lower pressures comfortably.
Me? I run 50F 40R, but I also have E rated 35's which can run lower pressures comfortably.
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