GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » What size tires/wheels you guys running on??
What size tires/wheels you guys running on?? [message #238815] Tue, 04 February 2014 20:52 Go to next message
Johnnycrash is currently offline  Johnnycrash   Canada
Messages: 55
Registered: January 2014
Location: Timmins, Ontario, Canada
Karma: 0
Member

So, something like P150/40R14H?? Very Happy

What size tires/wheels you guys running on?? Please, give me ALL the specs. The more the merrier. Thanks.


Somewhere on bdub (dbub??), what ever... Somewhere there was an image of a wheel cross section. I can't find it again. Anyone got a link?? Thanks.


.

John Fleming
http://www.coldnorth.com/johnnycrash/MMI/GMCMH
Building my own GMC Motorhome from scratch. Problem is, it's only 1/25.

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238819 is a reply to message #238815] Tue, 04 February 2014 21:34 Go to previous messageGo to next message
John Olson is currently offline  John Olson   United States
Messages: 96
Registered: August 2013
Karma: 0
Member
Tire
Size



Article
Number Appr. Rim
Width Overall
Tire Diameter Tread
Depth Tire
Weight

LT225/75R16



189752 6.0-7.0 29.3 14
36


Firestone Transforce HT



John Olson
76 Edgemont
Chicago, IL (currently nomadic in AZ)


On Tue, Feb 4, 2014 at 7:52 PM, John Fleming <johnfleming@coldnorth.com>wrote:

>
>
>
> So, something like P150/40R14H?? :d
>
> What size tires/wheels you guys running on?? Please, give me ALL the
> specs. The more the merrier. Thanks.
>
>
> Somewhere on bdub (dbub??), what ever... Somewhere there was an image of a
> wheel cross section. I can't find it again. Anyone got a link?? Thanks.
>
>
> .
>
> --
> John Fleming
> http://www.coldnorth.com/johnnycrash/MMI/GMCMH
> Building my own GMC Motorhome from scratch. Problem is, it's only 1/25.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

John Olson 76 Edgemonte Fulltime traveler

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238833 is a reply to message #238815] Tue, 04 February 2014 23:24 Go to previous messageGo to next message
Bullitthead is currently offline  Bullitthead   United States
Messages: 1411
Registered: November 2013
Karma: 5
Senior Member
P tires are for Passenger cars- not for use on GMC except in emergency.

I run Kelly tires
Safari ATR
225/75 R16
load range E

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238837 is a reply to message #238833] Wed, 05 February 2014 00:13 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Terry,

When I bought The Blue Streak I was really happy as it had six brand new tires and a new spare. I drove it about 150 miles from
country NSW to Sydney and it was all over the road!

I didn't know diddley squat about GMC's at the time and when I looked at the tires I noticed they were "P" rated. I checked the
pressure and they were inflated to the max @ 45psi. After a bit of research I found out the tires should be LT.

No wonder it was all over the road! I replaced them with NEXEN LT225/75 R16 All terrain which I inflated to 65 front / 60 rear. Made
a HUGE difference in the way it handled.

Regards,
Rob M.
Sydney, Australia

-----Original Message-----
From: Terry

P tires are for Passenger cars- not for use on GMC except in emergency.

I run Kelly tires
Safari ATR
225/75 R16
load range E
--
Terry Kelpien
73 Glacier 260
Smithfield, Va.

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238848 is a reply to message #238837] Wed, 05 February 2014 07:34 Go to previous messageGo to next message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
LT 225/75 R 16. On OEM16" Steel Wheels.
Chinese imports from Wal-Mart, 3,500+ places to honor warranty.
Tom, MS II

2012 Phoenix Cruiser model 2552 KA4CSG

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238860 is a reply to message #238848] Wed, 05 February 2014 09:18 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
Cooper Discoverer II LT 225 75R16 on Kanomata Specials.  Load range E, and around 65 PSI.
 
--johnny
 

From: Thomas Phipps <tph1pp5@yahoo.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, February 5, 2014 8:34 AM
Subject: Re: [GMCnet] What size tires/wheels you guys running on??




LT  225/75 R 16. On OEM16" Steel Wheels.
Chinese imports from Wal-Mart, 3,500+ places to honor warranty.
Tom, MS II
--
1975 GMC Avion

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238864 is a reply to message #238815] Wed, 05 February 2014 09:38 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
In the sig he says 1/25th Scale model?

John Lebetski
Woodstock, IL
77 Eleganza II

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238866 is a reply to message #238833] Wed, 05 February 2014 09:51 Go to previous messageGo to next message
Johnnycrash is currently offline  Johnnycrash   Canada
Messages: 55
Registered: January 2014
Location: Timmins, Ontario, Canada
Karma: 0
Member
Bullitthead wrote

P tires are for Passenger cars- not for use on GMC except in emergency.
Didn't see the smilie?? Look at that tire I specified... All you took from that was the "P"?? Shocked

So, it looks like 225/75R16 are the staple. Makes sense to me. When I had my '83 Merc Marquis, I ran 235/70R14. Nice ride. I miss that car. Anyways...

I guess I should have asked about off-set as well. I have seen everything from what looks like 0 to +10". What is the advantage to running such a great off-set?? Doesn't that mean you need new wheel hubs or spacers, adding to the cost and maintenance issues??

Has anyone ever ran duallies?? With that +10" off-set, bolting up a second wheel seems like the next (il)logical step.


.

John Fleming
http://www.coldnorth.com/johnnycrash/MMI/GMCMH
Building my own GMC Motorhome from scratch. Problem is, it's only 1/25.

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238868 is a reply to message #238864] Wed, 05 February 2014 10:02 Go to previous messageGo to next message
Johnnycrash is currently offline  Johnnycrash   Canada
Messages: 55
Registered: January 2014
Location: Timmins, Ontario, Canada
Karma: 0
Member
JohnL455 wrote

In the sig he says 1/25th Scale model?
Yup. This is all research on building the ultimate 1/25 scale model kit of the GMC Motorhome. And then the EM-50 from Stripes (1981). But, I also love this vehicle. And I do hope to one day own one. But... 1/25 is more likely. Oh well.


http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=236957&rid=4262#msg_236957

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=237977&rid=4262#msg_237977


http://coldnorth.com/johnnycrash/MMI/GMCMH/

http://coldnorth.com/johnnycrash/MMI/GMCMH/R&D/


.

John Fleming
http://www.coldnorth.com/johnnycrash/MMI/GMCMH
Building my own GMC Motorhome from scratch. Problem is, it's only 1/25.

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238869 is a reply to message #238866] Wed, 05 February 2014 10:04 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
Messages: 4442
Registered: January 2004
Karma: 13
Senior Member

On Feb 5, 2014, at 8:51 AM, John Fleming <johnfleming@coldnorth.com> wrote:

>
>
> Has anyone ever ran duallies?? With that +10" off-set, bolting up a second wheel seems like the next (il)logical step.
>

Years ago I saw a GMC on a beach with two wheels on each side of the front. The fellow said that gave him good traction in the sand. He would mount two spare tires back to back on his spare tire carrier and mount them to the front when he needed them.

Emery Stora
77 Kingsley
Frederick, CO

-20 ° F at 7 am. Expected to hit +7° by 2 pm
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238870 is a reply to message #238866] Wed, 05 February 2014 10:06 Go to previous messageGo to next message
corleyw is currently offline  corleyw   United States
Messages: 130
Registered: June 2007
Location: Battle Ground, WA
Karma: 0
Senior Member
Something to think about: Some states are now implementing checks for tire age. For example, in Oregon, if a truck or motorhome is stopped for anything, or in an accident, the SP probably will check the age of the tires. If the date code makes them more than 7 years old, there is a deep fine. 7 years is the recommended max age for a tire carcass now.

Since you will have to replace your tires in 7 years, a) make sure you are purchasing fresh tires when you buy new ones. b) consider if you want to pay for the best ones out there, then throw them out with full tread left after 7 years (You will probably never wear them out in that time). c) Consider where you could get a guarantee honored when you are on the road, away from home.

Finally, check the load rating, keep them air'd to the recommended pressure, and get only LT tires, not P.

All in all, motels are cheaper... Very Happy

Corley '76 Glenbrook 29 other vehicles

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238873 is a reply to message #238848] Wed, 05 February 2014 10:10 Go to previous messageGo to next message
1275gtsport is currently offline  1275gtsport   Canada
Messages: 272
Registered: September 2009
Location: Rothesay NB
Karma: 0
Senior Member
tphipps wrote on Wed, 05 February 2014 09:34

On OEM16" Steel Wheels.
Tom, MS II


OEM was not 16.

OEM was 16.5

I am running 16.5 steel rims painted black.
Firestone HT transforce
8.75R 16.5LT load range E
Blackwall at 65lbs

Adam Raeburn
Rothesay, NB
1976 Austin Mini
1977 GMC Palm Beach
---------------------------------------------------
Once you replace everything that is attached to something else. It will all be fixed.

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238876 is a reply to message #238815] Wed, 05 February 2014 10:33 Go to previous messageGo to next message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
Senior Member
I am running 16" Alcoa's with 245-75-16 Michelin LTX MS tires. One size large than stock. The only reason for the larger tire is...I like the look. A little vain here...but what the hell...I'm 68 and know what I like.

Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238877 is a reply to message #238815] Wed, 05 February 2014 10:57 Go to previous messageGo to next message
An87ttype is currently offline  An87ttype   United States
Messages: 157
Registered: September 2012
Karma: 0
Senior Member
I also have 245-75-16 That the PO had on the Alcoa's. They are just about aged out and i will go back to the stock 225 size. I agree with Larry that they look good but I don't like the lugging and the speedo is also off. I have the stock 3.07 FD. Maybe if I had somthing else I would keep them.

1975 Eleganza II Hudson Valley NY

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238881 is a reply to message #238877] Wed, 05 February 2014 11:47 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
I am with Larry, I love the look. I run over sized tires on all of my vehicles. 245-75-16. 355 final drive and a screaming 455 with Holley TBI.
Dan

3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238892 is a reply to message #238881] Wed, 05 February 2014 15:14 Go to previous messageGo to next message
mikethebike is currently offline  mikethebike   United States
Messages: 331
Registered: January 2014
Karma: 0
Senior Member
225/75/16 on Eagle Allow Forged rims. Uniroyal Laredo HD/H load range 'e'….. because my brother in law could save $60 per tire for me….Yeah, I know, world class cheap skate but I just couldn't see the extra $$$$ for Michelin when the blue bus never sees more than 65 mph and the tires will age out long before they wear out.

Report message to a moderator

Re: What size tires/wheels you guys running on?? [message #238903 is a reply to message #238892] Wed, 05 February 2014 16:44 Go to previous messageGo to next message
Bob de Kruyff   United States
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
Senior Member
mikethebike wrote on Wed, 05 February 2014 14:14

225/75/16 on Eagle Allow Forged rims. Uniroyal Laredo HD/H load range 'e'….. because my brother in law could save $60 per tire for me….Yeah, I know, world class cheap skate but I just couldn't see the extra $$$$ for Michelin when the blue bus never sees more than 65 mph and the tires will age out long before they wear out.


Uniroyal is a Michelin company and recent experience at this end shows them to be excellent tires.

Bob de Kruyff
78 Eleganza
Chandler, AZ

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238906 is a reply to message #238866] Wed, 05 February 2014 17:02 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
John,

Here's a link to the specs for Alcoa wheels for a GMC:

http://www.gmcmhphotos.com/photos/random-photos/p46735-alcoa-wheels-for-a-gmc.html

The front track is narrower than the rear track; here's a link to spacers that you install to bring them into alignment:

http://www.appliedgmc.com/prod.itml/icOid/656

Regards,
Rob M.
Sydney, Australia

-----Original Message-----
From: John Fleming

So, it looks like 225/75R16 are the staple. Makes sense to me. When I had my '83 Merc Marquis, I ran 235/70R14. Nice ride. I miss
that car. Anyways...

I guess I should have asked about off-set as well. I have seen everything from what looks like 0 to +10". What is the advantage to
running such a great off-set?? Doesn't that mean you need new wheel hubs or spacers, adding to the cost and maintenance issues??

Has anyone ever ran duallies?? With that +10" off-set, bolting up a second wheel seems like the next (il)logical step.

John

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238920 is a reply to message #238906] Wed, 05 February 2014 19:09 Go to previous messageGo to next message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
I am very well aware that GMC Motorhome OEM wheel is 16.5". However, I have a complete set of GMC Dually Pick-Up 16" Steel Wheels, therefore the "OEM" content.
Tires are also Losd Range E.
Tom, MS II

2012 Phoenix Cruiser model 2552 KA4CSG

Report message to a moderator

Re: [GMCnet] What size tires/wheels you guys running on?? [message #238923 is a reply to message #238920] Wed, 05 February 2014 19:25 Go to previous messageGo to previous message
ggroth is currently offline  ggroth   United States
Messages: 282
Registered: February 2004
Location: Carson City NV
Karma: 0
Senior Member
I also run the 245's mentioned above, BFG. I saw an improvement in handling, no rut running when I changed over. I think the bigger tires make the coach handle better.

geo groth '73 260 Sequoia Carson City Nevada 89703

Report message to a moderator

Previous Topic: [GMCnet] screen door
Next Topic: [GMCnet] bean station
Goto Forum:
  


Current Time: Fri Nov 15 17:00:31 CST 2024

Total time taken to generate the page: 0.00805 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software