LBZ: Suggestions for PSI with H2's and 285's when towing? - Page 2 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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Old 01-23-2013, 07:19 PM   #11 (permalink)
306LBZ
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Because I hookup to the trailer daily at 5:30 am and wouldnt waste my time deflating every day whenever I get done. And the sidewall of the tire doesnt have a loaded / unloaded psi rating just max psi when cold like any other tire I've ever bought.

The sidewall of the tire doesnt look compressed any more or less noticable to the eye when unloaded or hooked up to the trailer, Maybe slightly but not too much by any means. Traction on the icy roads is far from good at 65 in the rear so Ill run at 60 for a bit again to compare. Just keep forgetting to air down when Im out there and its too cold to get the ambition to go back outside for that purpose right now.
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Old 01-23-2013, 09:03 PM   #12 (permalink)
diesail
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Do you know rear axle weights? For a 285/75R17E the tables say max load per tire is

2215 # @ 35 PSI
2430 # @ 40 PSI
2640 # @ 45 PSI
2835 # @ 50 PSI
2955 # @ 55 PSI
3075 # @ 60 PSI
3195 # @ 65 PSI
3595 # @ 70 PSI
3775 # @ 75 PSI
3970 # @ 80 PSI
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Last edited by diesail; 01-23-2013 at 09:05 PM.
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Old 01-23-2013, 10:15 PM   #13 (permalink)
306LBZ
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Thats good info thanks Diesail. I dont know exact weights, havent weighed it yet but assuming Im 9000 lbs loaded (trailer + cargo) Pin weight should be around 2250 lbs(rough calculation at 25%) add on whatever the stock rear end weighs(which I dont think is much) plus 2x 3.5" blocks and a fifthwheel hitch. Ill take a shot in the dark and guess my rear end to be somewhere around 3000 lbs so I should be ok at 60lbs assuming my guess work is right.

I know I know I should get weighed but just not sure where and when I can around here and would prefer not to go to a govt' weigh station. One day I will but the stock I carry isnt overly heavy, it does add up but its not extreme weight by any means.
__________________
2006 2500HD LS CCSB 4X4 LBZ/Allison 1000/NP263HD/9.25/AAM 11.5/3.73's with a bowtie on the front
EFI Live Autocal custom tuned by Rob Coddens from ATP
TRANSGO JR
EGR Blocked and Disabled
Cognito 4" NTBD Kit w/ Zinc plated Bilsteins all around
KRYPTONITE UCA'S
285 70 10 PLY BFG AT TAKO's on 17" H2's(SUMMER)
255 85 10 PLY ON 16" PYO'S(WINTER)
and a few other minor additions here and there(SEE GARAGE)
Reese 20K Slider 5thwheel Hitch
Towing a 36' 5THWHEEL ENCLOSED CARGO TRAILER ALL DAY LONG!
NEW: 2006 2500HD LT ECSB 4X4 6.0L/4L80E/4.10'S/Eagle Alloy's w 265 75 16 10 ply's/Rancho 5000's/AIR BAGS/WALKER QUIET FLOW3
Proud Member #20 of the "OIL is OIL" association
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