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Old 06-27-2013, 10:13 PM   #1
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TT tire pressure

Having my TT tires rebalanced Saturday and wondering if anyone runs tire pressures different than the sidewall states for max pressure. Found mine low on pressure out of storage from a year and a concrete lot. Sidewall says 80 psi all four tires and spare at 40 psi. I suspect from when I bought them last spring they were never properly inflated by the store.
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Old 06-27-2013, 10:57 PM   #2
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There are basically 2 schools of thought:

1) run max pressure as indicated on the sidewall
2) weigh the wheels individually and adjust the pressure according to the manufacturers load capacity chart

Personally, I go with #1.
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Old 06-27-2013, 11:00 PM   #3
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Just follow the tire manufacturer's max psi cold rating. If you overinflate, and the tire is a little old, they will blow out. Ask me how I know! I HAD Carlisle radial trail 205 75 R14's new- 2 out of 4 had blowouts- strangely enough it was the 2 in the back-one on each side. They were load range C. Now I have Freestars- load range D. Hope they are better! Randy
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Old 06-27-2013, 11:37 PM   #4
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Thank you guys
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Old 06-28-2013, 02:34 PM   #5
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If you can give me the maximum load of the tire , written on the sidewall, and the pressure needed for that ( probalby that 80 psi) , and from the TT the GVWR ( gross vehicle weight rating), I can calculate for you with my travel-trailer-tirepressure-calculator the needed pressure .
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Old 06-28-2013, 02:57 PM   #6
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Simplest and easiest to do is just inflate to max pressure listed on the sidewall and get a TST TPMS and forget them. They will wear great unless you have a bent spindle or an axle out of alignment. Trying to match load to pressure is a PITA and gets nothing. Some folks seem to think the trailer rides smoother but I defy them to prove the difference between 60psi and 65psi in the ride of a trailer. I have put shocks on my trailer and it rides very smooth and just follows the road contour and doesn't bounce and transmit the bounce to the truck.
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Old 06-30-2013, 03:05 PM   #7
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I had all tires remounted and high pressure brass valve stems installed in place of the low pressure rubber stems that were incorrectly installed previously. All tires inflated to 80 psi and rebalanced. Replaced the old spare tire and bought road hazard coverage on all 5 tires. So I am now ready to roll with peace of mind!
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Old 06-30-2013, 03:10 PM   #8
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Old 06-30-2013, 03:53 PM   #9
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Even at 60 psi, your tires would carry almost 10,000 lbs, so you could definitely run them lower than 80 psi.
When you upgraded to load-range "E" tires, I assume you checked to make sure that the wheels are rated for 80 psi?
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Old 06-30-2013, 05:00 PM   #10
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All of my race car haulers do run Nitrogen and inflated to max tire pressure no tire problems and yes Nitrogen does not build up heat and yes you still have to weekly check tire pressures. 'Tire Maintenance'
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