SuiteSuccess Posted June 9, 2018 Report Share Posted June 9, 2018 On the new to us DRV we are running Goodyear G114s 17.5”. Because of our weights they are inflated to cold pressures of 120 psi. which is max cold inflation pressures. I noticed on a recent trip with OAT high 80’s pressures were running 139-140. Temps remained mid to high 90’s on TST and hub check with infrared gun confirmed hubs were in the 90’s. Question is how much pressure increase is allowed for in manufacturing without tire damage? I know it is mainly heat that damages the tire and leads to blowouts. What pressures are you seeing? 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
jeffw Posted June 9, 2018 Report Share Posted June 9, 2018 We have 17.5"s as well. Starting at 125 we'll see over 150psi on long trips on hot days. 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Bobi and Dick McKee Posted June 9, 2018 Report Share Posted June 9, 2018 We see the same thing on our DRV. Start at 120 get up to the mid 130's and into the 40's on a hot day. The sunny side will run about 5 to 10 degrees hotter depending on the temperature. I remember reading that there is no problem for the tires unit the 150's. I set my temp alarm at 150 and in 6 years have never had it go off. Link to comment Share on other sites More sharing options...
SuiteSuccess Posted June 9, 2018 Author Report Share Posted June 9, 2018 2 hours ago, Bobi and Dick McKee said: We see the same thing on our DRV. Start at 120 get up to the mid 130's and into the 40's on a hot day. The sunny side will run about 5 to 10 degrees hotter depending on the temperature. I remember reading that there is no problem for the tires unit the 150's. I set my temp alarm at 150 and in 6 years have never had it go off. MY TST tire monitors won’t even go below 157 on the temps. Just was a little concerned seeing the pressures edging to 140 psi but guess they can handle it. 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
SuiteSuccess Posted June 9, 2018 Author Report Share Posted June 9, 2018 3 hours ago, jeffw said: We have 17.5"s as well. Starting at 125 we'll see over 150psi on long trips on hot days. Thanks Jeff that reassures me. 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
wtgeodog Posted June 9, 2018 Report Share Posted June 9, 2018 Carl, Set your tire pressures for th heaviest wheel weight and forget about temp. rise. ShortyO Link to comment Share on other sites More sharing options...
billr Posted June 10, 2018 Report Share Posted June 10, 2018 Carl what Shorty said. Maybe jump up next line on chart for safety margin. For example, on our DRV with 17.5 G114s our heaviest tire req 100 psi on charts. I run 105. Keeps that total rise down a fair bit. Less a kaboom if ever happens. If you do need 120 or 125 indeed then no worries. That’s Cold press set. Heat induced rise is accepted by mfg. What you see is normal. Bill and Joan and 3 Collie pups 2001 Volvo VNL 770 "The Doghouse" Singled short, "ET" hItch VED12 465HP Gen 1 Autoshift 3.58 ratio 2005 Mobile Suite 38RL3 2011 Smart Passion loaded piggybacK Weigh-It Portable RV Scales http://www.weighitrv.com/ Link to comment Share on other sites More sharing options...
travelinbob Posted June 10, 2018 Report Share Posted June 10, 2018 22 hours ago, SuiteSuccess said: On the new to us DRV we are running Goodyear G114s 17.5”. Because of our weights they are inflated to cold pressures of 120 psi. which is max cold inflation pressures. I noticed on a recent trip with OAT high 80’s pressures were running 139-140. Temps remained mid to high 90’s on TST and hub check with infrared gun confirmed hubs were in the 90’s. Question is how much pressure increase is allowed for in manufacturing without tire damage? I know it is mainly heat that damages the tire and leads to blowouts. What pressures are you seeing? Hubs reading in the 90's....what bearings do you have ? I have neverlube and they run hotter than that. 2006 Elite Suite 36TK32001 F-550 Starhaulerwww.mytripjournal.com/elitesuitestravelsIN GOD WE TRUST Link to comment Share on other sites More sharing options...
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