[AT] truck tires; now pressures

Thu May 15 14:29:06 PDT 2014

I didn't realize that Steve, so basically I'm over-inflating my tires 
when I haul? We haul horses in our goose-neck and I watch our tire 
pressure very carefully, especially with 3 on board in the summertime. 
It's amazing to me how many people don't, and are perplexed as to why 
they blew a tire going 85 mph down the highway on a 90 degree day on 
tires that were under inflated and 10 years old. :)

Mike M

On 5/15/2014 2:02 PM, Stephen Offiler wrote:
> Respectfully disagree there, Mike.  Tire pressure ratings are provided by
> the manufacturers for pickup trucks as well as passenger vehicles.  In the
> case of pickup trucks, the pressures relate to the truck hauling at max
> GVWR.  Pretty much the opposite of what you just said if I read you
> correctly.
>
> SO
>
>
> On Thu, May 15, 2014 at 1:12 PM, Mike <meulenms at gmx.com> wrote:
>
>> Charlie, i think you may have misread Jeff's post, he is saying NOT to
>> inflate tires to their maximum pressure by default. I also think that
>> the pressure ratings provided by the auto manufacturers, are mainly for
>> passenger vehicles, not trucks (pick-ups included) that are hauling
>> heavy loads or trailers. With my truck I put maximum pressure in the
>> rears when hauling our goose-neck, and it rides and handles fine. When
>> we're done hauling I take the air right back out again. If I don't I
>> bounce around like crazy and have poor rear traction.
>>
>> Mike M
>>
>> On 5/15/2014 6:49 AM, charlie hill wrote:
>>> Jeff I know you mean well by posting that and since I don't
>>> remember seeing you post here before I don't want to discourage
>>> you with a negative reply but I just can't agree with that.
>>>
>>> Generally speaking your tires should be inflated to the pressure that
>>> creates maximum
>>> contact with the pavement.   Put a set of load range  E  tires on a
>> pickup
>>> truck and inflate
>>> them to their max and try to drive on wet pavement.  You'll be lucky to
>> keep
>>> the
>>> vehicle under control.   I nearly wrecked my truck once when I bought a
>> set
>>> of tires
>>> out of town at a chain tire store who did just that.  My vehicle
>> recommended
>>> 36 psi.
>>> The store set them at 50 psi.  I noticed they were very squirrely
>> feeling on
>>> the way
>>> home but didn't think much about it until I hit some rain and nearly
>>> wrecked.  Those tires
>>> weren't Load range E, they were just good quality load C tires with a
>> high
>>> max pressure
>>> rating.
>>>
>>> I drove a tractor trailer for many years and we always adjust tire
>> pressure
>>> to load.  Most of the
>>> time we were running heavy loads and when we were dead heading somewhere
>> and
>>> it started
>>> to rain we had to be very careful.   Tire pressure is often adjusted down
>>> for running off road on
>>> soft surfaces as well.  In fact, some tractor trailers now come with a
>> rig
>>> that allows them to adjust
>>> tire pressure from the cab of the truck.
>>>
>>> Running too much pressure (just because the tire says you can) will cause
>>> premature wear in the
>>> center of the tire as well as making the vehicle hard to handle.   If you
>>> really want to know how to
>>> precisely set your tire pressure get yourself an infrared thermometer,
>> drive
>>> the vehicle until the
>>> tires are warmed up good by going around some curves.  Then stop and have
>>> someone take
>>> temperature readings across the face of the tire.  If the temps are about
>>> the same on all of the
>>> treads you have them right.  That is how race teams set up their cars for
>>> racing assuring they
>>> have maximum tire contact.
>>>
>>> Others might have different opinions but I know what has worked for me
>> for a
>>> few million miles
>>> in all sorts of vehicles.
>>>
>>> Charlie
>>>
>>> -----Original Message-----
>>> From: Jeff & Ginny Pomije
>>> Sent: Wednesday, May 14, 2014 10:16 PM
>>> To: at at lists.antique-tractor.com
>>> Subject: Re: [AT] OT truck tires/driveshaft?
>>>
>>> Can't speak to the vibration, but tires show the max PSI that they can
>>> handle.  That is not the same as what is recommended by the vehicle
>>> maker.  Usually on the driver's door frame of vehicles is a tag that
>>> gives the recommended tire pressure for that vehicle.
>>>
>>> Jeff Pomije
>>>
>>> On 5/14/2014 8:39 PM, jtchall at nc.rr.com wrote:
>>>> Dropped the air pressure in the front tires to 65 and the vibration
>>>> dropped
>>>> to tolerable levels, at times not even noticeable. I had close to 80 in
>>>> the
>>>> tires, I'm thinking the tires call for 85 or 90 psi. The guy that sold
>> me
>>>> those tires says 65 should be fine. I don't understand the discrepancy
>>>> between what he is telling me and what is listed on the tire.
>>>> Could vibration with higher pressure be a sign of bad shocks (I guess it
>>>> has
>>>> them on the front, haven't looked). Anyway, got a small load of scrap
>> iron
>>>> I
>>>> need to haul. Not enough weight to load the truck but I should be able
>> to
>>>> get an idea if the vibration is going to be tolerable.
>>>>
>>>> John
>>>>
>>>>
>>>>
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