โOct-10-2020 06:54 PM
โOct-15-2020 07:49 PM
dave17352 wrote:We have a Leprechaun 319MB I run 70 front, 80 rear and 70 in the airbags.
Just ready to head out in our new to use rig. Its a 2016 260ds Leprechaun. I was checking tire pressure and airing up. Door panel says 65 front 80 rears. I am probably about 13k and the rig has a max of about 14.5. I have not weighed her yet but I have 3k ccc. We are loaded lite. I know things add up quickly as I have had many rigs.
Back to the original question. Assuming I am running well under max what do you folks with a 27 foot class c run your pressures at.
Thanks
Dave
โOct-12-2020 01:23 PM
DrewE wrote:Cummins12V98 wrote:
E LT225/75R16
80psi
single 3,000# x = 6,000#
Dual 2,727# x 4 = 10,908#
What is the source for those numbers? They appear to me to be for load range F at 95 psi, rather than load range E at 80 psi.
The LT225/75R16 load range E tires I have on my class C are embossed with a max load rating of 2680 lbs single at 80 psi (i.e. 5320 lbs per axle), or 2470 lbs dual at 80 psi (9880 lbs per axle). I'm sitting here with my laptop reading it off said tire directly. This agrees with all the data I can find online for this size and load range of tire.
โOct-12-2020 12:51 PM
Cummins12V98 wrote:
E LT225/75R16
80psi
single 3,000# x = 6,000#
Dual 2,727# x 4 = 10,908#
โOct-12-2020 10:41 AM
โOct-12-2020 05:40 AM
โOct-11-2020 06:17 PM
Cummins12V98 wrote:DrewE wrote:
For most class C's, adding 5 psi to the rear tires over the chassis manufacturer's recommendations (i.e. the door sticker) will put the tires exactly 5 psi over their maximum inflation pressure. The rear axle weight rating is the maximum for the standard tires at their maximum pressure of 80 psi. It's fairly likely the wheels are also rated for a maximum of 80 psi.
Would 5 psi higher than the rating be dangerous in practice? Probably not...but still it's hardly a good idea.
Please show me a class C rear tire inflation of 80psi. Do you understand that will add up to at least 11,000#.
Like I said weigh your rig LOADED. Use chart, it ainโt gonna be 80psi front or rear.
I run full rear axle rating of 9,750#. Ram says 65psi rear.
โOct-11-2020 02:37 PM
DrewE wrote:Cummins12V98 wrote:
I agree but I will add by saying to add 10 psi to the front chart spec and 5psi to the rears.
For most class C's, adding 5 psi to the rear tires over the chassis manufacturer's recommendations (i.e. the door sticker) will put the tires exactly 5 psi over their maximum inflation pressure. The rear axle weight rating is the maximum for the standard tires at their maximum pressure of 80 psi. It's fairly likely the wheels are also rated for a maximum of 80 psi.
Would 5 psi higher than the rating be dangerous in practice? Probably not...but still it's hardly a good idea.
โOct-11-2020 02:32 PM
DrewE wrote:Cummins12V98 wrote:
I agree but I will add by saying to add 10 psi to the front chart spec and 5psi to the rears.
For most class C's, adding 5 psi to the rear tires over the chassis manufacturer's recommendations (i.e. the door sticker) will put the tires exactly 5 psi over their maximum inflation pressure. The rear axle weight rating is the maximum for the standard tires at their maximum pressure of 80 psi. It's fairly likely the wheels are also rated for a maximum of 80 psi.
Would 5 psi higher than the rating be dangerous in practice? Probably not...but still it's hardly a good idea.
โOct-11-2020 02:30 PM
IAMICHABOD wrote:Cummins12V98 wrote:
I agree but I will add by saying to add 10 psi to the front chart spec and 5psi to the rears.
That is ludicrous the very reason of the spec chart is to give you the BEST INFORMATION why use it at all if you choose to ignore it...:S
โOct-11-2020 02:27 PM
โOct-11-2020 12:37 PM
Cummins12V98 wrote:
I agree but I will add by saying to add 10 psi to the front chart spec and 5psi to the rears.
โOct-11-2020 11:35 AM
2014 RAM 3500 Diesel 4x4 Dually long bed. B&W RVK3600 hitch โข 2015 Crossroads Elevation Homestead Toy Hauler ("The Taj Mahauler") โข <\br >Toys:
โOct-11-2020 11:34 AM
Cummins12V98 wrote:
I agree but I will add by saying to add 10 psi to the front chart spec and 5psi to the rears.
โOct-11-2020 09:44 AM
wa8yxm wrote:
Till you scale it go with the maker's mark (No not the booze) The manfacturer's recommendation.
Then get it weighed and use the Tire Maker's inflation chart.
I say that because there are a few inflation pressures all but guaranteed to be wrong
1: The number on the sidewall (Actually it's right but you need to read the full sentence: Maximum load of xxxxx pounds at maximum pressure of yy PSI)
2: the pressure on the sticker (They do not know know much STUFF you have)
3: The pressure the tire dealer puts in.
On my rig.. turns out the sidewall is correct as loaded.