mkirsch
Rochester, NY
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The Nissan rims are only rated to 50PSI, at most.
If you air up to 80PSI, you run the risk of splitting the rim, especially if they're alloys.
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goducks10
Keizer OR
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mkirsch wrote:The Nissan rims are only rated to 50PSI, at most.
If you air up to 80PSI, you run the risk of splitting the rim, especially if they're alloys.
Where do you come up with that? Just curious, since Discount Tire told me they would have no problem putting 80psi in my F150 rims. But since it wasn't nessecary for load purposes they recomended 45psi. I'm sure Toyota rims and Ford rims are different, but I have never found anyone or any data to back up psi claims. My F150 rims don't even have a load rating or psi rating on them. I had the rears off last year and looked all over the rim and saw nothing.
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wdcd
dacula GA
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I find it hard to believe that the 18 inch rims on a Nissan Titan can only handle 50PSI. They make a truck with a towing capacity of 9000# and a wheel can't handle 50#s of air. If you have anything on paper or a link to back that up I would love to see it. I am going to continue searching the web for more facts and thanks guys for all the input.
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wittmeba
Virginia
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All tires provide a max load rating at a max pressure. My opinion is scale the pressure to the load on the tires.
Postings about tires usually yield 3 replies.
- those who guess
- those who use deflation tables based on derated loads
- those who run at max PSI
Goodyear suggests running max pressure for trailers as they are subject to varying loads and sidewall pressures due to winds, tow conditions and loads.
Personally I use my own load table.
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wdcd
dacula GA
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Now thats the kind of info I was looking for.
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spadoctor
Clinton Corners, NY
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That truck came with P series tires....thus 55 to 60 lbs MAX pressure for the wheels....common for P series wheels. DO NOT INFLATE TO MAX TIRE SIDEWALL SPEC FOR CURRENT TIRES.
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MyKidsDad
Humboldt County
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OP, I have the same truck you have, and searched in vain to find what the rims are rated for. Tire shops (and individual technicians within the shops) offer lots of opinions, all the way from run stock pressure (35psi) to max sidewall (80psi). I run 40psi for light duty, 50psi for towing my utility trailer, and 60 psi for towing my toy hauler. The TPMS will warn you for high pressure in addition to low pressure (around 65psi seems to be the pressure that trips the system on the high side) and it may never work right again when subjected to 65 psi, as I found out the hard way! I vary my pressure to make sure I get even tire wear, 275/70 R18 is the stock size on an 8" wide rim and seems to wear fairly evenly, but I ensure this by varying the pressure; when running 60psi continuously I notice a little extra wear in the centers, so I drop them down when not towing.
Using the chart shown above is the best advise posted so far, it is in agreement with manufactures load inflation tables. My tires never see more than 2000 pounds apiece, so they do not need to run 80psi for their full 3640 pound weight rating. Weigh your rig if you haven't already and go from there to decide what pressure you want to run. Happy towing!
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JIMNLIN
out here
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wdcd wrote:I find it hard to believe that the 18 inch rims on a Nissan Titan can only handle 50PSI. They make a truck with a towing capacity of 9000# and a wheel can't handle 50#s of air. If you have anything on paper or a link to back that up I would love to see it. I am going to continue searching the web for more facts and thanks guys for all the input.
The 1/2 ton Titan may have 18" wheels but all 18" wheels aren't created equal. Example are the 18" used on F350/3500 SRW trucks with a 3500-3700 lb wheel load rating for those big 7000 RAWR.
I can't see Nissan using those big heavy wheels on a little 1/2 ton truck with a small 3900-4100 lb RAWR at 2000-2200 lb per wheel/tire requirement for your 1/2 ton truck. I use LT C at 50 psi, fits nicely for my wifes 1500 4x4 crew cab chevy truck and is a great upgrade from the P tire.
Not being a wize azz but its not up to us to link you to your trucks wheels specs. Thats your job. We have no idea what your wheel are.
When its comes to wheel load ratings and pressure ratings I do my own leg work for my particular trucks wheels.
Pressure rating may be a placard/steel stamped on the (front/back) wheel somewhere including in the wheels well which requires removing the tire. A experienced tire dealer can help you.
Most experienced tire dealers also won't mount a 80 psi rated tire on a 50 or 65 psi rated wheel. Mine says its simply too much of a liability issue.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers
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goducks10
Keizer OR
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JIMNLIN wrote:wdcd wrote:I find it hard to believe that the 18 inch rims on a Nissan Titan can only handle 50PSI. They make a truck with a towing capacity of 9000# and a wheel can't handle 50#s of air. If you have anything on paper or a link to back that up I would love to see it. I am going to continue searching the web for more facts and thanks guys for all the input.
The 1/2 ton Titan may have 18" wheels but all 18" wheels aren't created equal. Example are the 18" used on F350/3500 SRW trucks with a 3500-3700 lb wheel load rating for those big 7000 RAWR.
I can't see Nissan using those big heavy wheels on a little 1/2 ton truck with a small 3900-4100 lb RAWR at 2000-2200 lb per wheel/tire requirement for your 1/2 ton truck. I use LT C at 50 psi, fits nicely for my wifes 1500 4x4 crew cab chevy truck and is a great upgrade from the P tire.
Not being a wize azz but its not up to us to link you to your trucks wheels specs. Thats your job. We have no idea what your wheel are.
When its comes to wheel load ratings and pressure ratings I do my own leg work for my particular trucks wheels.
Pressure rating may be a placard/steel stamped on the (front/back) wheel somewhere including in the wheels well which requires removing the tire. A experienced tire dealer can help you.
Most experienced tire dealers also won't mount a 80 psi rated tire on a 50 or 65 psi rated wheel. Mine says its simply too much of a liability issue.
Totaly agree mostly. However I think Discount Tire is pretty reputable and did in fact install 80psi tires on my 2010 F150 that had P tires from the factory. I guess like rims, not all dealers are equall.
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wdcd
dacula GA
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I posted on here to see what experience others that may have the same setup as me are running. And for any experts advice as they may have more knowledge than me. The chart listed above is a great starting point for me. I have also found something similar since then on the WEB. I knew that I would get a lot of different opinions but was really looking for someone with a similar setup as mine. MY KIDS DAD is the type of info that I was looking for as he stated he has my same setup. That is what this forum is for to get information from other people that have done the same as you are looking to do. When I see something that doesn't sound right to me( 50 PSI max in a wheel) I question to where you received such information so that I may research it. This forum is a starting point and usually easier than looking all over the web for information. Thanks for all the help guys and I look forward to towing with more air in my tires than i have previously done. I will update after the weekend how it went.
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