Reply
 
Thread Tools Display Modes
Old 04-14-2015, 07:58 PM   #1
Senior Member
 
gashog's Avatar
 
Join Date: Aug 2014
Location: Kansas
Posts: 343
Yes another TIRE thread

I just ordered a set of Maxxis M8008 ST225/75R15 "D" Load Rated tires from Discount Tires. My existing China Trail Express are "C" rated and I keep them inflated at 50 PSI max and never drive over 65 MPH. Now that I'm going with "D" load rated, I would like to have some opinions on tire pressure.

How many out there weight their TT and go by the Tire Manufactures Tire Load/Inflation charts or just inflate their tires to the maximum PSI rating (which in my case would be 65 PSI when I get my new "D" rated tires)?
Just looking for what people are doing that has worked for them.

Here's what Maxxis chart shows for ST225/75R15 Tires
50 PSI for 2150 LBS
55 PSI for 2270 LBS
60 PSI for 2380 LBS
65 PSI for 2540 LBS
__________________

__________________
2015 Rockwood Windjammer 3029W Diamond Package

2014 RAM 2500 Laramie Longhorn 4 x 4
6.4 Hemi 410 HP, 410 Rear Axle
gashog is offline   Reply With Quote
Old 04-14-2015, 08:04 PM   #2
Senior Member
 
Ford Idaho's Avatar
 
Join Date: Sep 2013
Location: Idaho
Posts: 9,840
65 PSI no matter if the lite is empty and on the way to the dealer or loaded and tripping down the freeway.

I have the D load 225-75-R15 Akuret.
__________________

__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
Ford Idaho is offline   Reply With Quote
Old 04-14-2015, 08:21 PM   #3
Senior Member
 
RPAspey's Avatar
 
Join Date: Jul 2008
Location: central PA
Posts: 973
I run D's and religiously keep them at 65psi and never run faster than 65 mph.
__________________
2000 Cherokee 29BH with 6V batteries, LED lights & 400 watts of solar power, flipped axles and raised. 2007 Tundra 5.7L DC-LB with lots of mods. C-co, 8/158th AVN Maint.
RPAspey is offline   Reply With Quote
Old 04-15-2015, 08:17 AM   #4
Junior Member
 
Join Date: Sep 2014
Location: Kennesaw, GA
Posts: 22
Well I'm going to stir the pot and I run E rated @70psi and can go 70+ with no problem. My GVW is just under 12K. The plus is down hill to keep momentum up the next.
__________________
gatnfans is offline   Reply With Quote
Old 04-15-2015, 01:02 PM   #5
Member
 
GerryW's Avatar
 
Join Date: Jan 2015
Posts: 37
Quote:
Originally Posted by gashog View Post
I just ordered a set of Maxxis M8008 ST225/75R15 "D" Load Rated tires from Discount Tires. My existing China Trail Express are "C" rated and I keep them inflated at 50 PSI max and never drive over 65 MPH. Now that I'm going with "D" load rated, I would like to have some opinions on tire pressure.

How many out there weight their TT and go by the Tire Manufactures Tire Load/Inflation charts or just inflate their tires to the maximum PSI rating (which in my case would be 65 PSI when I get my new "D" rated tires)?
Just looking for what people are doing that has worked for them.

Here's what Maxxis chart shows for ST225/75R15 Tires
50 PSI for 2150 LBS
55 PSI for 2270 LBS
60 PSI for 2380 LBS
65 PSI for 2540 LBS

My 2300 calls for 75 front 65 rear FULLY LOADED. Weighed rig, way under. Michelin RV tire chart calls for 55 F & 60 R. Phoned Michelin, talked to a tire specialist and confirmed pressures. Being anal I am running at 60 F & 65 R. Steering feels less squirrely than when it was 15 PSI overinflated. Maybe more rubber on the road? If your rig is running at max capacity then going with the max may be OK. It's only $11 to weigh your rig so why not. Maxxis knows their tires better than we do...
__________________
GerryW is offline   Reply With Quote
Old 04-15-2015, 02:07 PM   #6
Junior Member
 
Join Date: May 2012
Location: Chicagoland
Posts: 17
Check the wheels for max pressure. You may have run the "D" rated tires at 60 psi.
__________________
4Galvs + DN = 5Galvs
2009 Rockwood 8317SS O 2011 GMC Yukon Denali AWD
5Galv's Campsite
5Galvs is offline   Reply With Quote
Old 04-15-2015, 02:31 PM   #7
Senior Member
 
Blackhat6mike's Avatar
 
Join Date: Dec 2014
Location: St Simons Island, GA
Posts: 1,204
Tire Pressure

Quote:
Originally Posted by Ford Idaho View Post
65 PSI no matter if the lite is empty and on the way to the dealer or loaded and tripping down the freeway.

I have the D load 225-75-R15 Akuret.
X 2 Ford Idaho "E" load 225-75-R15 Akuret Always 80 psi. TSTM 507
__________________
Aviator Wright Flyer #1919
Army Pathfinder Vietnam, 3 tours
DAV, MOPH, VFW, NRA, 1stCav. ABN
Blackhat6mike is offline   Reply With Quote
Old 04-15-2015, 03:51 PM   #8
Senior Member
 
Join Date: Dec 2014
Posts: 329
I agree with the folks going with the 65 PSI on the D's I have used D's on my trailers since 1984 and ran 65 PSI with no problems. Trailer will tow easier and run cooler.
__________________
tomrob1161 is offline   Reply With Quote
Old 04-15-2015, 03:56 PM   #9
Senior Member
 
Join Date: Apr 2011
Location: Splendora, Texas
Posts: 1,229
As stated above D rated tires are 65 PSI and not to exceed 65 MPH.
__________________
whj77372 is offline   Reply With Quote
Old 04-15-2015, 04:27 PM   #10
Senior Member
 
Join Date: Dec 2014
Posts: 329
I run 65 PSI, cold. Of course as you drive the pressure increases, but this is built into the tires.
__________________

__________________
tomrob1161 is offline   Reply With Quote
Reply

Tags
tire

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:41 AM.