Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-19-2013, 06:12 PM   #15
Member
 
Charrua72's Avatar
 
Join Date: Apr 2013
Posts: 56
Quote:
Originally Posted by chief02 View Post
If truckers paid better attention to tire inflation we would not have rubber aligator skins laying all over the highway. Just saying. BTW..former DOT transportation safety director in my second career.
Yes you still would, get rid of recaps and lower speeds would rid about 80% of the skins on the road.
__________________

__________________
Charrua72 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-19-2013, 06:39 PM   #16
Senior Member
 
ctpres's Avatar


 
Ford Super Duty Owner
Join Date: May 2010
Location: Chasing 70 degrees in lower 48
Posts: 1,891
OP HERE: Based on my Goodyear table and your comments, I stopped by Brazel's office to see what was right. Wrong tire selected. Lesson learned - don't talk to a guy that is working - wait for him to finish or get to stopping point. Seems women can do two things at once but not most men. I'll take the blame for this one. Correct tire entered and new data says 80 front and rear. That is still a pretty big change from Damon data card in coach. I should have had the four corner weigh done a long time ago. Expect mpg to go up some but hopefully the smoother ride will make DW's back happy. Thanks to all for the help.
__________________

__________________
Suzie & Chuck USNR USAF USCGA Challenger Owners Club 2015 37KT Challenger, Demco Commander tow bar, Ready Brake, Sewer Solutions, Safe-T-Plus 41-230, 5-Star tune, towing 2017 Ford Edge FWD 3.6L V-6 four down & 385 FastTrack kayak in the basement.
Summer - Creede, CO Winter - Okeechobee, FL
ctpres is offline   Reply With Quote
Old 07-19-2013, 06:42 PM   #17
Senior Member
 
wildtoad's Avatar
 
Join Date: Jul 2010
Posts: 2,929
Sometimes it's good to talk about things....
__________________
Tom Wilds
Blythewood SC
2016 Newmar Bay Star Sport 3004
2013 Chevy Sonic Hatchback (Automatic)
wildtoad is offline   Reply With Quote
Old 07-23-2013, 06:05 AM   #18
Member
 
Join Date: May 2013
Posts: 79
Send a message via ICQ to Waterview202
It sounds like chuck is not dividing the rear tire weight by 4 tires. then the weight per tire would be the same as the front
__________________
Waterview202 is offline   Reply With Quote
Old 07-23-2013, 07:10 AM   #19
Senior Member
 
Old Scout's Avatar
 
Join Date: Nov 2005
Posts: 3,938
Assuming you are comparing the right tire size with the correct coach weight--my gut feel is that you should run your tires within 10% of max allowable pressure [full pressure if your weight calls for it]. Reason: worst thing you can do to a tire is to run it under inflated. Running at or near max pressure also gives you better fuel mileage and a larger margin of safety in the event of a slow leak. Other than a "somewhat rougher ride," I cant think of anything bad that can come from inflating toward the high end of the recommended inflation range--cant say the same for the low end.
__________________
Old Scout
2003 40' MDTS
Garden Ridge, Texas
Old Scout is offline   Reply With Quote
Old 07-23-2013, 09:56 AM   #20
Senior Member
 
Jim28730's Avatar


 
Newmar Owners Club
Join Date: Dec 2008
Location: Maggie Valley, NC
Posts: 815
Quote:
Originally Posted by Old Scout View Post
Assuming you are comparing the right tire size with the correct coach weight--my gut feel is that you should run your tires within 10% of max allowable pressure [full pressure if your weight calls for it]. Reason: worst thing you can do to a tire is to run it under inflated. Running at or near max pressure also gives you better fuel mileage and a larger margin of safety in the event of a slow leak. Other than a "somewhat rougher ride," I cant think of anything bad that can come from inflating toward the high end of the recommended inflation range--cant say the same for the low end.
X2!
__________________
Jim & Sandy
2016 Newmar Ventana 4037
2014 Grand Cherokee Summit
Jim28730 is offline   Reply With Quote
Old 07-23-2013, 07:47 PM   #21
Senior Member
 
ctpres's Avatar


 
Ford Super Duty Owner
Join Date: May 2010
Location: Chasing 70 degrees in lower 48
Posts: 1,891
Old Scout Agree! But - DW has back problems and comfort comes before mpg and I question the impact of harder ride on coach components and systems. We have TPMS to guard against the slow leaks. As DW gets better I will increase pressure - but NOT back to factory spec's. And four corner weight will be an annual routine from now on. Not mentioned is braking - I can't find specific data but will bet TP on lower end of table will result in shorter stopping distance due to wider footprint on road surface.
__________________
Suzie & Chuck USNR USAF USCGA Challenger Owners Club 2015 37KT Challenger, Demco Commander tow bar, Ready Brake, Sewer Solutions, Safe-T-Plus 41-230, 5-Star tune, towing 2017 Ford Edge FWD 3.6L V-6 four down & 385 FastTrack kayak in the basement.
Summer - Creede, CO Winter - Okeechobee, FL
ctpres is offline   Reply With Quote
Old 07-23-2013, 09:30 PM   #22
Senior Member
 
ImagineIF's Avatar
 
Join Date: May 2010
Posts: 1,045
Quote:
Originally Posted by Old Scout View Post
Assuming you are comparing the right tire size with the correct coach weight--my gut feel is that you should run your tires within 10% of max allowable pressure [full pressure if your weight calls for it]. Reason: worst thing you can do to a tire is to run it under inflated. Running at or near max pressure also gives you better fuel mileage and a larger margin of safety in the event of a slow leak. Other than a "somewhat rougher ride," I cant think of anything bad that can come from inflating toward the high end of the recommended inflation range--cant say the same for the low end.
Truck tires don't read "Inflate to XX PSI" like a bicycle tire. You are correct that under inflation is bad and lead to tire failure. But over inflation can reslt in less tread on the road. This will be visible with tread ear in the center of the tire and less traction on wet roads. There's a reason tire manufacturers publish tire pressure charts.
__________________
Gil
99 Country Coach
Prevost XL 45 Conversion
ImagineIF is offline   Reply With Quote
Old 07-23-2013, 09:38 PM   #23
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 28,515
Quote:
Originally Posted by Old Scout View Post
Assuming you are comparing the right tire size with the correct coach weight--my gut feel is that you should run your tires within 10% of max allowable pressure [full pressure if your weight calls for it]. Reason: worst thing you can do to a tire is to run it under inflated. Running at or near max pressure also gives you better fuel mileage and a larger margin of safety in the event of a slow leak. Other than a "somewhat rougher ride," I cant think of anything bad that can come from inflating toward the high end of the recommended inflation range--cant say the same for the low end.
Well, your "gut feeling" isn't the same as the tire engineers published info!
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 07-23-2013, 11:02 PM   #24
Senior Member
 
Ramzfan's Avatar


 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Dec 2010
Posts: 730
I've driven motorhomes for over 35 years...class C, Class A, Gas and Diesel. I have NEVER had my motorhome weighed. I usually go by what the manufacturer recommends and sometimes I adjust for ride, etc. I drove one class A coach for 14 years and over 30,000 miles on the same set of Michelins without a blowout. Weigh 'em if you want, but in my opinion, you could use the money for fuel and come out a lot farther ahead.
__________________

__________________
06' Itasca Meridian 36g with CAT 350
2011 Jeep Wrangler 4-door
Ramzfan is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:09 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.