Tire pressure for entire rig - Page 2

bsmith0404 · 07-23-2015, 07:17 AM

I'll be honest, I keep the rears at max mainly because the loads I tow vary and I'm too lazy to constantly calculate what they "should" be. On the fronts, I watch the wear pattern and adjust the pressure accordingly to get even wear across the entire tread. My thought is if the entire tread face is making even contact with the road, the load on the tire is as evenly spread as possible, it also gives me the best tread wear/tire life. Currently I'm running 70 in the front. I have 65k miles on this set of tires (rotated every 5-7k) and all 6 are showing 7/32-8/32 tread left.

gearhead · 07-24-2015, 03:10 PM

I admit I haven't spent a lot of time thinking this through, but dang it, I still don't get it.
What is wrong with running duals at max pressure? Will it damage the tire?
I'm not saying I would inflate the tire to carry more load. What's wrong with having another 500# of excess capacity and not using it?
My SRW Ford says 65# front and 80# rear. I think the front looks "soft" at 65 and I run them at 70#. With no load I run the rears at 70# and air them up to 80# when loaded. I've got about 42,000 miles on the original Michelins. Probably replace at around 50,000.

bsmith0404 · 07-24-2015, 05:21 PM

Personally I don't see an issue with running them at max other than the fact that they are a bit harsh. Sidewall flex is a great shock absorber, but at max, especially when not needed, they are very stiff. Additionally, as I eluded to earlier, having more air than needed for the load causes excess center wear as well as loss of grip due to a smaller contact patch. A good rotation schedule keeps mine all very even. As mentioned earlier, I have 65k on these tires and all 6 vary between 7/32 and 8/32 across the entire face. Based on current wear, I should see right around 85k before I change them out at 4-5/32

rbev2308 · 07-24-2015, 05:57 PM

Well first part of trip some 300 miles to outskirts of Blue Ridge mountains went well other than the hurricane force monsoon had to drive thru for 50 miles. Eventually set my dually tires at 80 on the front and 78 on the rears and trailer at 105 on all 4. Temps stayed under 100 on all the tires all 300 miles. Pressure rose on one tire on my dually by 1 PSI so def no where near the max so may back those off. The G614's all rose to 115 and pretty much stayed at 113-115 the entire way. Heck they are still at 107 after day and a half of sitting...Headed over mountains to Anchor Down Resort in Dandridge, TN tomorrow. Looking forward to the run over Fancy Gap, VA

gearhead · 07-24-2015, 06:05 PM

Quote:

Originally Posted by rbev2308

Well first part of trip some 300 miles to outskirts of Blue Ridge mountains went well other than the hurricane force monsoon had to drive thru for 50 miles. Eventually set my dually tires at 80 on the front and 78 on the rears and trailer at 105 on all 4. Temps stayed under 100 on all the tires all 300 miles. Pressure rose on one tire on my dually by 1 PSI so def no where near the max so may back those off. The G614's all rose to 115 and pretty much stayed at 113-115 the entire way. Heck they are still at 107 after day and a half of sitting...Headed over mountains to Anchor Down Resort in Dandridge, TN tomorrow. Looking forward to the run over Fancy Gap, VA

Sounds like you're good chief. You gonna do Cade's Cove loop?
C130 stayed at Anchor Down and liked it....

rbev2308 · 07-24-2015, 06:19 PM

It is on our list for sure...Currently at Greystone RV park in Pilot Mountain, NC stay here whenever I visit my 12 acres of land outside of Hanging Rock State Park. Meeting group of family (7 rigs in all) at Anchor Down tomorrow. My brother went in April and loved it so much they cancelled a trip to Maine to come back. They hooked me up with site 133 which is 110 ft pull thru.

gearhead · 07-24-2015, 06:54 PM

If you get up around Winston-Salem see if you can get in Tanglewood RV Park in Clemmons NC. Nice.

LittleJoe · 07-30-2015, 02:14 PM

Quote:

Originally Posted by buckeyebobhockingcamper

ok here is my problem,when leaving ohio in december i fill my
tires to 80 rear ,60 front on tow vehicle(srw)i leave ohio and when i get into fkorida heat the tpms on my truck says warning check tire pressure.rears are at 92-95 psi,should i stop and let some air out and take them back to 80?also rear truck rims are too hot to hold,is this heat normal.?i have noticed tires wear like overinflation in center of tread(firestone tranzforce)my new 5er is 500 more lbs on pin weight at 2250.i am gonna install airbags on tv2007 chevy d/a i guess my main question is should i let air out,i see lots of people with more pin weight on srw trucks than i am running

Tire pressure will increase approx. 1psi for every 10F rise in temp, so airing up when its -20 and driving into 90F temp will certainly see an increase. Your pressure should be adjusted accordingly but only on a cold tire.

I run my tires slightly on the lowside in the cold when heading south and they end up slightly on the high side in Florida.

For the record I run my fronts at 80 psi and get the best life and shoulder wear of any pressure (Cummins are heavy). If I run the rear duals above 50psi the centers wear out fast

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