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Old 04-24-2019, 04:42 PM   #1
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Goodyear G114 Tires Question

I opted to order the Beacon with the upgrade from Westlake to Goodyear tires. They are G114 215/75R17.5 with a cold tire pressure of 125 psi. I can't find a maximum psi rating. My tire monitoring system showed while traveling back home they all ran around 140 psi going down the interstate. I know they won't all be the same as the load on each will be slightly different, but I'm wondering at what psi and temperature should I become concerned?
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Old 04-24-2019, 05:04 PM   #2
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120-125 cold and they should be fine. I use and IR thermometer and check tire and hub temps at stops. If one if significantly warmer then the others by 30 degrees i get suspicious.


Going to 17.5 you have saved yourself a lot of headaches
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Old 04-24-2019, 05:31 PM   #3
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Quote:
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120-125 cold and they should be fine. I use and IR thermometer and check tire and hub temps at stops. If one if significantly warmer then the others by 30 degrees i get suspicious.


Going to 17.5 you have saved yourself a lot of headaches




How so?
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Old 04-24-2019, 07:46 PM   #4
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16's are close to maxed out or on the ragged edge for a heavy 5ver. 17.5 tires are no where near maxed and work easily under the load there subjected to on an rv.
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Old 04-25-2019, 08:52 AM   #5
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TPMS are not know for being accurate when it comes to showing correct tire pressures.
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Old 04-25-2019, 12:19 PM   #6
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TPMS are not know for being accurate when it comes to showing correct tire pressures.
I think mine is very close. At least when cold, I'm within 1 to 3 pounds. What I'm wondering is when should I become concerned? But I guess a problem would most likely be isolated to one tire, so I can watch for one that is much different from the others. Over time I'll learn what's the norm. I'm used to seeing tires with Maximum pressure stated on the tire.

I have a base pressure (cold) of 125 psi and Tire Minder sets an alarm at 20% above that or 150 psi
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Old 04-25-2019, 08:57 PM   #7
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Good year has a psi graph relative to weight of axle / tire . Go read it. You may not need Mac psi. Just makes the trailer ride rougher . Over PSI relative to weight makes tires too stiff and unforgiving .
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Old 04-26-2019, 07:46 AM   #8
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here ya go:
Attached Files
File Type: pdf rv_inflation.pdf (86.7 KB, 201 views)
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Old 04-26-2019, 01:45 PM   #9
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here ya go:
Yes the Load is stamped right on the tire for single and dual and it also has stamped the cold tire pressure, but I don't see a max pressure like I normally see on other tires (I think) or am I thinking about my bicycle tires?
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Old 04-26-2019, 03:57 PM   #10
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Quote:
Originally Posted by RoadEyePie View Post
Yes the Load is stamped right on the tire for single and dual and it also has stamped the cold tire pressure, but I don't see a max pressure like I normally see on other tires (I think) or am I thinking about my bicycle tires?
1st thing to do is load everything in your truck and trailer that you will have travelling and then go and get it weighed. Mine is 17600lbs with 4000lb pin weight. I have GY 6114 and run them at 110psi. At 125psi they will shake the heck out of the trailer. Running in CA in 110 degree weather psi will increase 20 to 30 lbs. The tires on the sunny side will show a higher temp and psi. Use a infrared gun and only worry when 1 tire is different than the others
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Old 04-26-2019, 04:17 PM   #11
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As the tires get hot due to road friction the PSI rises as does temp. The tire engineers at the factorys know this. They TEST them in all weather extremes so you don't have to spend your time deflating , reinflating and worrying about temp. If one tire is hotter then the others you have a problem. Sunnyside will always be warmer. The hotter the more psi will show cooler less .
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Old 04-27-2019, 12:28 PM   #12
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Load/inflation table

Goodyear G114 LHT (trailer only)
Size 215/75R17.5
Single tires per hub (not duals)
=====================
Cold | Max
PSI | Weight per tire (Lbs)
---- | -------------
90 .. 3,695
95 .. 3,860
100 . 4,020
105 . 4,180
110 . 4,340
115 . 4,495
120 . 4,650
125 . 4,805

Do not inflate to less than 90 PSI nor more than 125 PSI cold inflation pressure.

Adjust the PSI as needed the first thing in the morning before you move the trailer. Yeah, I know, that means you must park near the air compressor or else haul compressed air to the trailer. I use one of these when on the road:
https://www.walmart.com/ip/JEGS-Perf...8102fadbbfce64
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Old 05-05-2019, 08:31 PM   #13
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REP, Been running 17.5s on 2 trailers since 2009--I always set them at 120-125 as it is virtually impossible to get all at the exact same psi. Using a TPMS, it will show temps rising to close to 150 at times--trick is to watch for an anomaly in one or more tires. As said, tires are designed to be run at max sidewall pressure to carry the max listed load (4805 on most 215/17.5s) That is the max pressure to be run in the tire--any higher at cold temps will result in an over inflated condition. Don't get too caught up in tire pressures, just keep an eye on them and don't add/let out air unless the tire is a ambient temp.
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Old 05-08-2019, 07:08 PM   #14
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Yes, I purchased the VIAIR 400P RVS so I can inflate them at the campground. The TPM system seems to be working well. I'll keep watching them.
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