Well here is my 5c input. ( There's inflation you know).
My experience: My vehicle came with new 8;75 D range tires when I got
it in 1992. I have religiously tried to keep 65 lbs in the tires. I blew
out one rear a long time ago when my wife was driving and I was
peacefully haveing a snooze in the back. When it went, I just about went
through the roof with the bang, and I tore up to the front yelling to my
wife to get to the side of the road and to shut her down!My wife has
never been willing to drive again.It scared her as much as it did me. To
be fair to the tire I think I may have done some damage to it earlier by
hooking it on a rather sharp drop off on the edge of the road once.
Don't know for sure.Being fair to my wife I didn't try to cajole her
into driving any more!
I've also used two Michelin 8:75 in E range and run at 65lbs and had no
problems.Except driving a couple of 1/4" dia. bolts into them and giving
me flats. I now carry my own flat repair kit with me so never have to go
to a service station. Once I saw a nail in the tire before it went flat
,so just repaired it while still on the vehicle.
As I wear out my 8:75 tires I'm switching to Alcoas and to 225/75R16 E
Range tires.I'm experimenting with front at 65lbs. and rear at 55lbs.So
far no problems but I haven't had them very long. I still have 2 of the
original tires and they are now 7 years old. I hope they don't blow
due to age!Maybe I am being "penny wise and pound foolish" as they say
trying to sqeeze every mile out of them that I can.
In a tire chart I have for 16" wheels they give the following inflation
pressures:
225/75R 16 "tires E range, pressure /tire, single axle:
45lbs. 50lbs. 55lbs. 60lbs. 65lbs. 70lbs.
1790lbs. 1940lbs. 2060lbs. 2190lbs. 2335lbs. 2440lbs.
At any particular pressure the chart shows the D range carrying the same
weight as the E range,however the E range can carry higher levels of
weight at higher inflation pressures.
My opinion: Often RV's sit for long periods and tires don't get
exercised,so rubber deteriorates.Tires may sit in sun and tires are
often much older than our car tires which get used much more. Last but I
think still a big factor-we run under inflated at times.
It is not necessarily easy to get the gmc properly balanced in the
amount of weight distributed to each wheel. I'm sure there are some that
are rather cross balanced ie. more weight say on the left rear wheels
and more on the right front wheels.Things don't need to be much out of
wack to get an extra 2-3 hundred pounds on an axle.
Any way thats what I've found so far, but still learning,-and
experimenting as the rest.
Claude in Victoria,BC.
My experience: My vehicle came with new 8;75 D range tires when I got
it in 1992. I have religiously tried to keep 65 lbs in the tires. I blew
out one rear a long time ago when my wife was driving and I was
peacefully haveing a snooze in the back. When it went, I just about went
through the roof with the bang, and I tore up to the front yelling to my
wife to get to the side of the road and to shut her down!My wife has
never been willing to drive again.It scared her as much as it did me. To
be fair to the tire I think I may have done some damage to it earlier by
hooking it on a rather sharp drop off on the edge of the road once.
Don't know for sure.Being fair to my wife I didn't try to cajole her
into driving any more!
I've also used two Michelin 8:75 in E range and run at 65lbs and had no
problems.Except driving a couple of 1/4" dia. bolts into them and giving
me flats. I now carry my own flat repair kit with me so never have to go
to a service station. Once I saw a nail in the tire before it went flat
,so just repaired it while still on the vehicle.
As I wear out my 8:75 tires I'm switching to Alcoas and to 225/75R16 E
Range tires.I'm experimenting with front at 65lbs. and rear at 55lbs.So
far no problems but I haven't had them very long. I still have 2 of the
original tires and they are now 7 years old. I hope they don't blow
due to age!Maybe I am being "penny wise and pound foolish" as they say
trying to sqeeze every mile out of them that I can.
In a tire chart I have for 16" wheels they give the following inflation
pressures:
225/75R 16 "tires E range, pressure /tire, single axle:
45lbs. 50lbs. 55lbs. 60lbs. 65lbs. 70lbs.
1790lbs. 1940lbs. 2060lbs. 2190lbs. 2335lbs. 2440lbs.
At any particular pressure the chart shows the D range carrying the same
weight as the E range,however the E range can carry higher levels of
weight at higher inflation pressures.
My opinion: Often RV's sit for long periods and tires don't get
exercised,so rubber deteriorates.Tires may sit in sun and tires are
often much older than our car tires which get used much more. Last but I
think still a big factor-we run under inflated at times.
It is not necessarily easy to get the gmc properly balanced in the
amount of weight distributed to each wheel. I'm sure there are some that
are rather cross balanced ie. more weight say on the left rear wheels
and more on the right front wheels.Things don't need to be much out of
wack to get an extra 2-3 hundred pounds on an axle.
Any way thats what I've found so far, but still learning,-and
experimenting as the rest.
Claude in Victoria,BC.
