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4x4abc
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Location: La Paz, BCS
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Alan,
a radial split sounds very much like a manufacturing glitch.
Time for a new tire
Harald Pietschmann
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Bob and Susan
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Location: Mulege BCS on the BAY
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"douglas tire" name is owned by Walmart
so you bought Walmart tires
sometimes they are made by goodyear and sometimes they are not
sometimes its better to get a better tire especially if you are going to use them in the dirt
good tires are cheap insurance
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David K
Honored Nomad
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Registered: 8-30-2002
Location: San Diego County
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A 'name brand' tire, but cheaper than the BIG BOYS, I have really liked the performance of the Hankook DynaPro ATM. It is quiet on the highway,
superior in the sand, yet still great in mud and snow. They are very popular with others on Tacoma World forums and are now the stock tire used by
Nissan on the Xterra and Frontier trucks, I hear.
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bajatrailrider
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Registered: 1-24-2015
Location: Mexico
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Quote: Originally posted by JZ  | | Quote: Originally posted by bajatrailrider | | Could not even think to air up tires off road nuts. My Toyota off road truck 18psi / Nissan Diesel 18 psi/ Bronco 18 psi/ Heavy Dodge diesel 20 psi.
Motos 6 front /6psi rear/ KXF700 ATV 2 psi. Sidewall problems zero off road time every week for over 40 years. Nissan has p rated tires was aired down
pulling Wils heavy bronco in deep sand Pole line trip. Zero problems. |
Still can't believe you run the bikes at 6 psi.
Is the Dodge a 3/4 ton? What's it's recommended payment psi?
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Yes Dodge is
3/4 4x4 stick shift diesel It has BFGs max psi on tire is 50. I don't run these rigs on long pavement runs with low psi. On my dirt bikes we use
Ultra H.D tubes 4mil thick. I have run as little as 4 psi. Why would I do this its better then pushing the bike up the foot trails we ride. Also
running 10/12psi beats you to death. Where not racing the bikes with low psi. Just riding normal having fun not looking to get hurt. As far as the
KFX700 at 5 psi its all over the place on dirt road. With 2psi just right.
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bkbend
Senior Nomad
Posts: 693
Registered: 11-27-2003
Location: central OR or central baja
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http://douglas-tires-reviews.measuredup.com/3962
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4x4abc
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if you run the "max load xyz lb at xyz psi" pressure printed on your tire you are hurting the tires if your load per tire is less than xyz
and you are hurting your spine and brain by shaking them to pieces
but hey, science is not for everyone
https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=...
Harald Pietschmann
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4x4abc
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example
my truck has a GVWR of 7,000 lbs.
my tires (LT295/75R16) have max load of 3,970lbs. @ 80 psi (per tire mind you)
3,970 lbs. time 4 is 15,880 lbs.
if I would run the tires at the max rating, the center of the tread would wear out first - not good
the truck would run like a wheelbarrow - bad for my aging body
using the chalk method I found that the best everyday pressure for the tires is 29psi
40 psi for long fast highway runs
20 psi for dirt roads
10 psi for beaches
5 psi for the quicksand at Malarrimo
haven't had a flat tire in 20 years
have never lost a bead
I drive where few dare to go
I have never been stuck
however, you are all free to believe whatever is good for you
believing is religion - knowing is science
Harald Pietschmann
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StuckSucks
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A dozen years ago, I worked and lived in San Felipe for about four months. I quickly figured out to run around town with my tires aired down to mid
teens - made for a better ride on the SF "paved" roads, plus easy to spontaneously run in the desert.
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del mar
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| Quote: Originally posted by 4x4abc | example
my truck has a GVWR of 7,000 lbs.
my tires (LT295/75R16) have max load of 3,970lbs. @ 80 psi (per tire mind you)
3,970 lbs. time 4 is 15,880 lbs.
if I would run the tires at the max rating, the center of the tread would wear out first - not good
the truck would run like a wheelbarrow - bad for my aging body
using the chalk method I found that the best everyday pressure for the tires is 29psi
40 psi for long fast highway runs
20 psi for dirt roads
10 psi for beaches
5 psi for the quicksand at Malarrimo
haven't had a flat tire in 20 years
have never lost a bead
I drive where few dare to go
I have never been stuck
however, you are all free to believe whatever is good for you
believing is religion - knowing is science |
Harald, what would you suggest be the the proper (or safest) tire pressure for navigating the pot hole fields of Catavina?
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4x4abc
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what are the pot hole fields of Catavina?
Harald Pietschmann
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Bob and Susan
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Registered: 8-20-2003
Location: Mulege BCS on the BAY
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| Quote: Originally posted by 4x4abc | example
my truck has a GVWR of 7,000 lbs.
my tires (LT295/75R16) have max load of 3,970lbs. @ 80 psi (per tire mind you)
3,970 lbs. time 4 is 15,880 lbs.... |
i'm pretty sure this isn't a correct calculation
and this 15880 lbs is wrong
i'll have to do some research now...damn
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del mar
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highway 1 with deep sharp edged potholes, impossible to avoid em all. pump em up hard?
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TMW
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Location: Bakersfield, CA
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Avoid that section of hwy and take the coastal route by the sea.
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bajatrailrider
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JAAAA your right TMW only Mexico could have a dirt road better then paved.
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David K
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Where is the LIKE button?
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4x4abc
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go to tirerack.com
select tires by size
select 295/75R16
https://www.tirerack.com/tires/TireSearchResults.jsp?zip-cod...
first tire that shows up is a BFG
https://www.tirerack.com/tires/tires.jsp?tireMake=BFGoodrich...
click on specs
it shows you 3,970 lbs. at 80 psi
if one tire can carry 3,970 lbs. - 4 tires can carry 15,880 lbs.
my truck will max out at 7,000 lbs.
so, 15,880 @ 80 is way too much
pressure needs to be reduced
Harald Pietschmann
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John Harper
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| Quote: Originally posted by 4x4abc |
Using the chalk method I found that the best everyday pressure for the tires is 29psi
40 psi for long fast highway runs
20 psi for dirt roads
10 psi for beaches
5 psi for the quicksand at Malarrimo
haven't had a flat tire in 20 years
have never lost a bead
I drive where few dare to go
I have never been stuck
Knowing is science |
One question, do you measure these pressures on cold tires?
I set my deflators at 24 (and checked it) on the way to Mike's last year. Next morning at Mike's, the tires read 20 (your recommended pressure).
Obviously since I got off Hwy 3 the tires were warm and pressures up. I realized I should have checked overall pressure first (cold inflation was 34)
to see the difference when warm. It seems my setting of 24 becomes 20 on cold tires, so maybe I should stay at the 24 setting when on warm tires?
I will check this in April when I return to Mike's. I appreciate your input and experience. I will use your advice.
John
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4x4abc
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if 20 psi is the pressure you desire today for today's driving conditions - you set them to 20 psi
you may have to adjust the tire pressure tomorrow when the conditions have changed
temperature is one of those factors
another factor is elevation
the pressure we check in our tires is a relative pressure
relative to the outside air pressure
as you drive up in elevation, outside pressure goes down - your tire pressure goes up
the change is about 4.5 psi for every 10.000 ft
so, driving up to the San Pedro Martir observatory your tire pressure will increase by around 4 psi
since 4 psi won't affect any of us much this point is academic - but it needed to be mentioned for completeness
I was part of an expedition some years back in Iceland.
the rigs were running 44" tires with 2 psi
a change in temperature or elevation would make a significant difference when you aim for a 2 psi optimum
we had to adjust tire pressure every 2 hours
how did they keep the tires on the rims at 2 psi?
super glue
not kidding
back to the temperature related drop or rise in psi
every 10 degree increase will rise your pressure by 1 psi
so, John's drop of 4 psi at Mike's indicates a temperature drop of 40F
Harald Pietschmann
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TMW
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What would be the proper pressure for driving in snow and ice? I was in the mountains driving to our transmitter site when I came upon an ice patch.
All 4 wheels would just spin, no traction. I didn't have chains on so I aired down to I think about 20 lbs and away I went up the hill.
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4x4abc
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always think of tanks and caterpillars - they have huge "tire footprints"
the more you air down, the closer you get to a caterpillar
on some trips I have changed tire pressure 4 or 5 times.
sometimes just for 10 minutes to climb a nasty hill
that means, a serious 4x4 needs a serious air compressor
smart move, by the way, Tom!
State of California wanted to hire me some years back to teach maintenance crews for remote radio sites in 4x4 recovery. I talked them into teaching
not to get stuck. Tire pressure plays a big role in it. We added a few hours of recovery anyway, because it never hurts - but the main thinking has to
be "how can I avoid getting stuck", not "how do I use my winch"
[Edited on 1-19-2018 by 4x4abc]
Harald Pietschmann
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