Maxiis tire pressure

RustyJC wrote:

azdryheat wrote:
But if you over inflate the tires they will wear prematurely in the middle and wear out sooner.

I've yet to wear out a trailer tire. I've had them fail and I've had them age out, but never wear out.

Rusty

TTs and 5th. Never have worn out a trailer tire.

Never had a tire wear prematurely in the middle - due to over inflation - or anything else.

Never had a trailer tire "fail" (No STs here).

Traveled all over the USA with the trailers. (beginning in 1975).

Ditto on "age out" - and some should have been replaced at a "younger age"!.;)

.

IF you want another method of checking for proper inflation. Take a piece of chalk and make a mark all the way across the tread. Then drive for a short distance. If the center of the chalk is worn off you are overinflated if the ends are worn off you are under inflated. IF it is worn off evenly then you have correct inflation OR your drove to far over a dirt road :)

SkiSmuggs wrote:
I would just pump them up to their maximum of 65psi. I replaced my LRD Blow Max tires with Maxxis LRE and run them at 70-75, but not the max of 80 since my fiver isn't that heavy.

X2 except I have been running at 65 psi for 3 years with no ill effects. 5er weighs around 9500 lbs.

RustyJC wrote:

tinner12002 wrote:
I run my Maxxis 16" tires at 10 under max psi, one reason because I have more tire than came on the RV and 2, because pres increases as you start rolling down the road so in hot weather they still sometimes get over the max pres but not enough to worry about.

The maximum pressure shown on the sidewall is the maximum COLD inflation pressure. The manufacturers know that the pressure will rise above this max pressure as temperature increases - that's allowed for in the rating. The 17.5" Goodyear G114 tires on our 5th wheel will go from a cold pressure of 120 PSIG to a "hot" pressure of 135-145 PSIG with a tire temperature of only 95 to 105 degF.

Rusty

And even that cold pressure is not the maximum cold pressure of the tire. Its the cold pressure needed for the maximum load up to maximum speed of tire , or if lower 99m/h.
Once determined by info of tire maker semperit ( continental) that the maximum pressure cold is 1.4 times the AT-pressure given on sidewall ( fi D-load 65 psi x1.4=91 psi). Warm this rises 10 to 30% and tiretests by tire makers even fill 2 to 3 times the AT-pressure ( dont try this at home)
For ST tires most tire manufacturers still allow 10 psi higher then ( cold) AT-pressure.
This will not say that this AT pressure is always needed.

But I suspect the American tire makers of putting a tire designed for instance D-load in the market as E-load.
This I make of that in Europe there is much less choice in Loadrating.

tinner12002 wrote:
I run my Maxxis 16" tires at 10 under max psi, one reason because I have more tire than came on the RV and 2, because pres increases as you start rolling down the road so in hot weather they still sometimes get over the max pres but not enough to worry about.

The maximum pressure shown on the sidewall is the maximum COLD inflation pressure. The manufacturers know that the pressure will rise above this max pressure as temperature increases - that's allowed for in the rating. The 17.5" Goodyear G114 tires on our 5th wheel will go from a cold pressure of 120 PSIG to a "hot" pressure of 135-145 PSIG with a tire temperature of only 95 to 105 degF.

Rusty

I run my Maxxis 16" tires at 10 under max psi, one reason because I have more tire than came on the RV and 2, because pres increases as you start rolling down the road so in hot weather they still sometimes get over the max pres but not enough to worry about.

I run with 75# in my maxiis tires

I have them on my fiver that weighs about the same as yours. I run 60 psi in them. They have around 15000 miles on them so far and are holding up just fine. Be sure your rims will handle the pressure, tho. If you just put larger tires on the standard rims, they might not be rated for 60 psi.

azdryheat wrote:
But if you over inflate the tires they will wear prematurely in the middle and wear out sooner. I took my trailer to the scales and found out how much weight is riding only on the tires and use that to figure the PSI (13,025 in my case). I can then figure the weight and PSI when I put toys in the garage and adjust the tire pressure accordingly.

When was the last time an RV tire "wore out", that wasn't from having bad axles/hubs? I've run my E-rated tires at 80 and 70, and there's almost zero difference in "contact patch" at the same weight. I can't tell any difference in ride, either. Unless I were completely empty, and making a multi-thousand mile trip, I'd just keep 'em at max psi and not worry about it.

Lyle

ipeltier wrote:
I have Maxiis radial M8008 load range D tires on our fifth wheel. The Rv loaded weighs around 8500 lb. Does anyone know what the psi should be?

Can you give sises of tire or maximum load and speedcode of tire, then I can calculate a pressure range for your.

But your estimation of the load is dangerous, in practice it prooves to be higher mostly then you think. Only way to be shure is weighing , and then best per tire , second best per axle.
Also need configuration , so number of axles and total number of tires on the road.

If you only weigh total weight , I can determine a weightdifference to use, and make a pressure loadcapacity list for different speeds , and filled in with determined minimum and maximum load per tire.