RV.Net Open Roads Forum: Towing: Big Tires pulling Small tires.

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Towing

Open Roads Forum  >  Towing

 > Big Tires pulling Small tires.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Prev  |  Next
Sponsored By:
NRALIFR

Truck Camping Out West

Senior Member

Joined: 11/27/2005

View Profile



Posted: 08/22/21 07:11pm Link  |  Quote  |  Print  |  Notify Moderator

SweetLou wrote:

So the tire spins 1.3 times faster but we really don't know the speed of those small tires? Can we say 1.3 times faster than the truck, or 78 mph?


No, you can’t.

That would be nothing more than a variation of the trick question: “Which weighs more, a pound of feathers, or a pound of lead?”

The tires spin at a higher RPM, but the MPH is the exact same as the truck pulling it. [emoticon]

[emoticon][emoticon]


2001 Lance 1121 on a 2016 F450 ‘Scuse me while I whinge.
And for all you Scooby-Doo and Yosemite Sam types………..Let’s Go Brandon!!!


theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 08/22/21 07:32pm Link  |  Quote  |  Print  |  Notify Moderator

Bottom line. Re-pack those bearings regularly !

JRscooby

Indepmo

Senior Member

Joined: 06/10/2019

View Profile


Offline
Posted: 08/22/21 07:32pm Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR wrote:

SweetLou wrote:

So the tire spins 1.3 times faster but we really don't know the speed of those small tires? Can we say 1.3 times faster than the truck, or 78 mph?


No, you can’t.

That would be nothing more than a variation of the trick question: “Which weighs more, a pound of feathers, or a pound of lead?”

The tires spin at a higher RPM, but the MPH is the exact same as the truck pulling it. [emoticon]

[emoticon][emoticon]


A track loader is moving 8 MPH. How fast is the pad on the ground moving?

valhalla360

No paticular place.

Senior Member

Joined: 08/19/2009

View Profile



Good Sam RV Club Member


Posted: 08/23/21 05:29am Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

CA speed limit is 55 mph for all vehicles towing.


So it's perfectly safe to run 70mph in Nevada but cross the state line and suddenly, it's dangerous? This is a political rule that has nothing to do with the tire speed rating.

Pull the model and look up the speed rating.


Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV


SweetLou

La Quinta, CA USA

Senior Member

Joined: 06/03/2003

View Profile


Offline
Posted: 08/23/21 07:00am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

time2roll wrote:

CA speed limit is 55 mph for all vehicles towing.


So it's perfectly safe to run 70mph in Nevada but cross the state line and suddenly, it's dangerous? This is a political rule that has nothing to do with the tire speed rating.

Pull the model and look up the speed rating.

There is always someone in the bunch. They write more tickets.


2013 3500 Cummins 6.7 Quadcab 4x4 3.73 68FE Trans, 2007 HitchHiker Discover America 329 RSB
We love our Westie


SweetLou

La Quinta, CA USA

Senior Member

Joined: 06/03/2003

View Profile


Offline
Posted: 08/23/21 07:01am Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR wrote:

SweetLou wrote:

So the tire spins 1.3 times faster but we really don't know the speed of those small tires? Can we say 1.3 times faster than the truck, or 78 mph?


No, you can’t.

That would be nothing more than a variation of the trick question: “Which weighs more, a pound of feathers, or a pound of lead?”

The tires spin at a higher RPM, but the MPH is the exact same as the truck pulling it. [emoticon]

[emoticon][emoticon]

Ya dun caught me

SweetLou

La Quinta, CA USA

Senior Member

Joined: 06/03/2003

View Profile


Offline
Posted: 08/23/21 07:05am Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:

Bottom line. Re-pack those bearings regularly !

This is exactly what I told him. Also told him to do it himself. I pulled recently cargo trailer wheels that had been done last summer by a place I know that I thought did good work. I was amazed at what they considered packed. Do them yourself save and know.

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 08/23/21 01:26pm Link  |  Quote  |  Print  |  Notify Moderator

SweetLou wrote:

Actually his old trailer is an old U-haul but he says it doesn't say that 45 mph rule anywhere. The tires on it are new and for a car since he really doesn't weigh it down any. The tire brand and specs say 937 lbs at max pressure which I don't know what that is. So the tire spins 1.3 times faster but we really don't know the speed of those small tires? Can we say 1.3 times faster than the truck, or 78 mph?


Yes, exactly.
Except the trailer is still going the same speed, but comparing the rpms of the wheel, to something everyone can grasp (mph) is accurate.

Like mooky said, them 10" snomachine/pontoon boat trailer wheels hold up reasonably well at higher highway speeds, although not near as well as larger diameter tires.

PS, the 45mph uhaul max was/is to keep people who don't tow much, driving slower, IE less accidents and liability. Nothing to do with the trailer being able to not go faster without coming apart.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 08/23/21 01:27pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

CA speed limit is 55 mph for all vehicles towing.


Significance or relevance?

blt2ski

Kirkland, Wa

Moderator

Joined: 03/15/2001

View Profile


Offline
Posted: 08/23/21 02:01pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

time2roll wrote:

CA speed limit is 55 mph for all vehicles towing.


Significance or relevance?


Probably neither. No different than here I Wa st where rigs under 10k g w or no towing can go 70 where marked. Towing or licensed over 10k gvw you can only go 60mph max anywhere. That include licensed rig empty under 10 k, but licensed over 10k.

Marty


92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
00 Chev C2500, V5700, 4L80E, 4.10, base truck, no options!
92 Red-e-haul 12K equipment trailer

Check RV.Net Blogs at: blog.rv.net

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Prev  |  Next

Open Roads Forum  >  Towing

 > Big Tires pulling Small tires.
Search:   Advanced Search

Search only in Towing


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.