Tire Pressure (again}
 

Tire Pressure (again}

Started by luvrbus, December 28, 2019, 05:54:29 PM

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luvrbus

This makes for some interesting comments ,I found this in my manual  the same thing a Bridgestone and Toyo rep told me,I will snap you a photo of the "caution" when my battery get charged
Life is short drink the good wine first

lvmci

So Clifford, does this disqualify the guys that measure each wheels recomindations for ride comfort? lvmci...
MCI 102C3 8V92, Allison HT740
Formally MCI5A 8V71 Allison MT643
Brandon has really got it going!

richard5933

For comparison's sake, what does your sticker read and how does it compare to what the tire manufacturer's chart?
Richard
1974 GMC P8M4108a-125 Custom Coach "Land Cruiser" (Sold)
1964 GM PD4106-2412 (Former Bus)
1994 Airstream Excella 25-ft w/ 1999 Suburban 2500
Located in beautiful Wisconsin

dtcerrato

Never had any tire stickers on our 4104, nothing in da book either.
Dan & Sandy
North Central Florida
PD4104-129 since 1979
Toads: 2009 Jeep GC Limited 4X4 5.7L Hemi
             2008 GMC Envoy SLT 4x4 4.2L IL Vortec

richard5933

I've got the book for my 4108, and it shows pressures that are lower than the chart from the tire company. Since the chart for my bus was designed for use with bias tires with a G load rating, I ignore them and go with the tire company chart.
Richard
1974 GMC P8M4108a-125 Custom Coach "Land Cruiser" (Sold)
1964 GM PD4106-2412 (Former Bus)
1994 Airstream Excella 25-ft w/ 1999 Suburban 2500
Located in beautiful Wisconsin

Dave5Cs

That states Medium Duty Trck tires. Not H rated 16 ply which are heavy duty?
"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

luvrbus

Quote from: Dave5Cs on December 28, 2019, 07:04:44 PM
That states Medium Duty Trck tires. Not H rated 16 ply which are heavy duty?

It says buses too now are we driving a bus or a RV,the  rating of plys means a tire can carry more load with more air pressure or it did.Now on the serious side, Dave are you and Doreen going to Quartzsite this year Sonja would like to see Doreen   
Life is short drink the good wine first

Dave5Cs

If Publishers clearing house check comes Monday we will go. But probably not this year.
We have got to that stage of old where if you sit down and take it easy you will pay, LOL
Sent you a PM
"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

chessie4905

I think that is covering school type busses, not coaches, which are not considered medium duty, which school busses and motor homes are.
Need to see if new Prevosts or MCI's use this type of tire label.
GMC h8h 649#028 (4905)
Pennsylvania-central

luvrbus

Quote from: chessie4905 on December 28, 2019, 07:37:09 PM
I think that is covering school type busses, not coaches, which are not considered medium duty, which school busses and motor homes are.
Need to see if new Prevosts or MCI's use this type of tire label.

My MCI DL3 has a tire label the CC has a label even for load index,I am at 52,000 lbs GVW and 61,000 lbs axle weight is that medium or heavy ?   
Life is short drink the good wine first

chessie4905

That's why I asked about new coaches, whether they have them or not. Maybe it is only on medium duty and any newer motorhomes regardless of weight.
GMC h8h 649#028 (4905)
Pennsylvania-central

luvrbus

Quote from: chessie4905 on December 29, 2019, 04:55:22 AM
That's why I asked about new coaches, whether they have them or not. Maybe it is only on medium duty and any newer motorhomes regardless of weight.


I always thought the TPM on the newer buses were just a option then I found they are required by law just like they are on cars and pickups,LOL makes you wonder if they are sending a electronic message to big brother via Google   
Life is short drink the good wine first

chessie4905

All kinds of regulations on everything just keep spreading year after year.
GMC h8h 649#028 (4905)
Pennsylvania-central

buswarrior

When the officials refer to "medium duty" tires, they mean bus and truck tires that we are familiar with.

"Heavy duty" tires are not found on road going vehicles.

These general classifications cover the entire range of "tires" and can cause confusion outside of the learned circles of lab coat and pocket protector wearers.

I smell your American lawyers unwashed hands all over this, and it hav ing little to nothing to do with the inflation any particular tire should have in it...

Happy coaching!
Buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift

luvrbus

Quote from: buswarrior on December 29, 2019, 05:47:52 AM
When the officials refer to "medium duty" tires, they mean bus and truck tires that we are familiar with.

"Heavy duty" tires are not found on road going vehicles.

These general classifications cover the entire range of "tires" and can cause confusion outside of the learned circles of lab coat and pocket protector wearers.

I smell your American lawyers unwashed hands all over this, and it hav ing little to nothing to do with the inflation any particular tire should have in it...

Happy coaching!
Buswarrior

Sure it is the tire manufactures don't care what pressure you run,they are not taking blame if a tire fails and causes a accident if not inflated to the standard axle limit inflation ,another Ford/ Firestone deal not going to happen again costing billions of dollars the got you in wording took care of that.The tire industry is big business and you play  their game lol now you changing tires every 6 or 7 years instead of 15 years like in the past they doubled their sales making a cheaper tire and selling at a higher price JMO 
Life is short drink the good wine first