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RVing message boards => Towing and towables => Topic started by: RVMommaTo6 on May 23, 2019, 09:40:22 PM

Title: Top dolly speed
Post by: RVMommaTo6 on May 23, 2019, 09:40:22 PM
I'm looking at general tow dolly info online and I've read that the maximum speed for a tow dolly is both 45mph and 55mph. Does it depend on the dolly? Is this accurate? 45 is a lot less than 60 :/
Title: Re: Top dolly speed
Post by: Roy M on May 23, 2019, 11:13:54 PM
It depends on the tires and hubs. Many trailer tires are rated for 45 mph, these are often used on equipment like light duty utility trailers but obviously are not suitable for your application. Ditto for cheap wheel bearings and hubs. Remember too that many tow dollys don't have brakes. Do your research to ensure you get one that meets your needs.
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 23, 2019, 11:22:03 PM
It depends on the tires and hubs. Many trailer tires are rated for 45 mph, these are often used on equipment like light duty utility trailers but obviously are not suitable for your application. Ditto for cheap wheel bearings and hubs. Remember too that many tow dollys don't have brakes. Do your research to ensure you get one that meets your needs.
Mine has brakes (I bought one tonight) but I thought they would all be able to go on the highway, it never dawned on me to check that ahead of time. I'll have to find out the speed rating for this one specifically, thank you!
Title: Re: Top dolly speed
Post by: SeilerBird on May 24, 2019, 02:40:51 AM
Mine has brakes (I bought one tonight) but I thought they would all be able to go on the highway, it never dawned on me to check that ahead of time. I'll have to find out the speed rating for this one specifically, thank you!
Everyone knows Dolly can't go very fast anymore, she is 73 years old. ;D
Title: Re: Top dolly speed
Post by: Gary RV_Wizard on May 24, 2019, 07:51:44 AM
Where did you read about dolly speed limits? I've not encountered such a thing.  If it didn't come from the manufacturer of your dolly, or the tire manufacturer, don't lose sleep over it.   A dolly may have ST type tires and those are usually limited to 65 mph (as stated on the tire sidewall). Otherwise, it probably has LT type tires and those usually have a 77 mph max.

Prudence says that around 65 mph is as fast as you want to tow any sizable trailer.  Why push your luck?
Title: Re: Top dolly speed
Post by: Wasoki on May 24, 2019, 02:22:30 PM
Due to a lack of suspension, Tow Master dolly owners manual suggested that you deflate the tires and reduce speed when towing the dolly when empty.

When under load the dolly will behave differently, so speed is less of a factor.
Title: Re: Top dolly speed
Post by: grashley on May 24, 2019, 07:35:49 PM
What tow dolly did you buy?  Can you give us tire size and ratings, molded into the side wall of the tire?
Title: Re: Top dolly speed
Post by: Back2PA on May 24, 2019, 07:48:41 PM
I'd suggest you keep it below 60-65. That's not a limitation of the dolly, it's just my personal opinion as to what's prudent.


As far as actual limitations, as others have mentioned you are limited by the rated speed of your tires, the same consideration you'd have with any trailer.


Some U-haul dollies and trailers are placarded for 45 MPH, perhaps that's where this came from. That limitation is a fake number made up by the U-haul legal department, not an actual limitation of the dolly/trailer
Title: Re: Top dolly speed
Post by: Gary RV_Wizard on May 24, 2019, 07:59:40 PM
I think I've seen the 45 mph placard from U-Haul too, but this official Tips document says 55 mph max for their rental dolly.

https://www.uhaul.com/Articles/Tips/120/Tow-Dolly-User-Instructions/ (https://www.uhaul.com/Articles/Tips/120/Tow-Dolly-User-Instructions/)
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 24, 2019, 10:46:16 PM
Tom I don't put anything past Dolly, she's like a super hero lol
Gary I was looking for something else online and I came across an "everything you need to know about tow dollies" page. It was a sheet of facts and that was one of them. I thought, oh no, 45?! I planned on hitting 60 on the faster highways so I'm glad to hear that isn't the case.
That all makes sense, it's a Tow Master. Idk about the tires, I'm definitely going to check and possibly get new tires if need be.  I got a killer deal on this so I don't mind putting a little money into it.
Thank you so much, this forum has been priceless for me! You guys are the best!
Title: Re: Top dolly speed
Post by: RVRAC on May 24, 2019, 11:36:14 PM
I have a dolly for two years and several thousands of miles.  I keep the speed around 60.  No problem using it while traveling to several states.
Title: Re: Top dolly speed
Post by: ClassyC on May 25, 2019, 07:36:40 AM
Hey RVMomma, is it perhaps a Master Tow vs a Tow Master?  I kept getting the former in web search results.
Here is a Master Tow operations manual, probably good generic instructions here anyway.
https://www.mastertow.com/image/pdf/Manual.pdf
Only discussion of speed in that reference is in regard to tire ratings as discussed above.
Do you have a rear view camera setup to watch the towed vehicle.  May be useful. 
Also tire pressure monitor system is another potentially useful addition for you.
Cheers,
Title: Re: Top dolly speed
Post by: Gary RV_Wizard on May 25, 2019, 08:33:02 AM
We had a Master Tow dolly for a year and had no problems at all towing on Interstates at 60-65 mph.
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 25, 2019, 11:51:47 AM
Hmmmm, could be lol, I'll have to look, I probably mixed up the words. I do have a rear camera.
I'm glad to hear it's not just "common knowledge" like yeah of of course you can only go 45! I thought that's going to make for some LONG drives!
Title: Re: Top dolly speed
Post by: wackymac on May 25, 2019, 07:21:30 PM
Keep in mind California's 55 mph speed limit when towing.
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 25, 2019, 09:48:47 PM
Keep in mind California's 55 mph speed limit when towing.
I didn't know that! Thank you!
Title: Re: Top dolly speed
Post by: SLOweather on May 26, 2019, 07:29:21 AM
Keep in mind California's 55 mph speed limit when towing.

You must not have driven here lately. On I-5 in the central valley 2 weeks ago, no one was going 55, towing or not. 65-70 was generally the flow of traffic for everyone, the limit was 70, and the occasional idiot going 80 or more.  It's the same on 101, except around here the limit is 65, and no one goes 55.
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 26, 2019, 11:00:06 AM
Maybe people don't follow it, but according to the DMV website, there IS in fact a 55mph speed limit when towing in California.
Title: Re: Top dolly speed
Post by: SeilerBird on May 26, 2019, 11:31:06 AM
Maybe people don't follow it, but according to the DMV website, there IS in fact a 55mph speed limit when towing in California.
Yep and there are signs all over California announcing the 55mph towing speed limit. If a cop pulls you over for speeding while towing then telling the cop everyone else is doing it will not get you very far.
Title: Re: Top dolly speed
Post by: SargeW on May 26, 2019, 12:18:31 PM
Yep and there are signs all over California announcing the 55mph towing speed limit. If a cop pulls you over for speeding while towing then telling the cop everyone else is doing it will not get you very far.

Yep, and the CHP have no sense of humor for dangerous driving, and that includes RVers speeding while towing. And Ca has added signs in addition to the one that Tom posted above that state "All vehicle when towing anything" is 55 MPH.  There must have been some wiggle room in "Auto's with Trailers and Trucks" sign.
Title: Re: Top dolly speed
Post by: RVMommaTo6 on May 26, 2019, 03:47:39 PM
I was looking at the state maximums and there are states whose maximum speed while towing is 70, 75, even 80mph. That's crazy to me. I can't imagine driving my RV pulling a toad going 80mph. Not only for safety, but $$$  I think 60 is a good top speed, maybe push it to 65 if you're super experienced and in a hurry and it's a straight empty road with no wind lol otherwise, I'll waving as you pass me because 80 is way more than I'm comfortable with!
Title: Re: Top dolly speed
Post by: SargeW on May 26, 2019, 04:00:33 PM
You are 100% my opinion as well Amanda.  I just shake my head when someone passes me by towing a trailer of some sort doing 75 or 80 mph.  The industry standard for ST tires is 65 mph, but I guess they didn't get that memo.
But I have passed numerous rigs on the side of the road with shredded trailer tires. 
Title: Re: Top dolly speed
Post by: wackymac on May 26, 2019, 05:02:54 PM
And you can wave at them again as you pass the gas station they are stopped at.
Title: Re: Top dolly speed
Post by: wackymac on May 26, 2019, 05:06:46 PM
You must not have driven here lately. On I-5 in the central valley 2 weeks ago, no one was going 55, towing or not. 65-70 was generally the flow of traffic for everyone, the limit was 70, and the occasional idiot going 80 or more.  It's the same on 101, except around here the limit is 65, and no one goes 55.

Two years ago and I still went 55 - 60 mph.  As for 101, isn't the speed limit there also 55 when towing?
Title: Re: Top dolly speed
Post by: SargeW on May 26, 2019, 05:11:40 PM
Some highways in Ca still are just because of the condition of the way older roadways, and the way that the on and off ramps are built.
Title: Re: Top dolly speed
Post by: grashley on May 26, 2019, 07:16:09 PM
I was looking at the state maximums and there are states whose maximum speed while towing is 70, 75, even 80mph. That's crazy to me. I can't imagine driving my RV pulling a toad going 80mph. Not only for safety, but $$$  I think 60 is a good top speed, maybe push it to 65 if you're super experienced and in a hurry and it's a straight empty road with no wind lol otherwise, I'll waving as you pass me because 80 is way more than I'm comfortable with!

Wise beyond your years!!

When pulling the FW, cruise is set at 62.  Pass if you wish!  For all the reasons listed!
Title: Re: Top dolly speed
Post by: Old_Crow on May 26, 2019, 08:26:22 PM
Last fall, as we left Arizona and crossed over into Cali, I heard a trucker on the CB tell another one that he could probably do 10 over without getting hassled.
I normally run 62 mph on the interstate, so at that point I bumped the cruise up to 62.  Since November I've driven almost 1100 miles on California interstates at 62 mph.  I've passed and been passed by a number of CHP's with no problem.  I've had guys with giant 5'ers blow by me several times and I figure any cop up ahead will be busy with them when I pass by at 62.
Title: Re: Top dolly speed
Post by: jim_manley on May 26, 2019, 10:08:58 PM
I rotate my big-screen to point out the back window of my TT when towing and normally route the signal from a front-facing camera to it to create a "cloaking device" that allows those behind me to see what's going on ahead of me, especially when they want to pass.

If someone insists on tailgating me, flashing their lights, sounding their horn, etc., I have some pre-typed messages on a computer that cycle, and I can switch in that video to the big-screen.  The messages include, "I May Be Slow, But I'm Ahead Of YOU!", "Please Just Get It Over With And Pass Me ... While That 18-Wheeler Is Coming The Other Way!", "Please Pass ... Blind Driver In This Vehicle!", "Don't Follow Me ... I'm Behind a Highway Patrol Vehicle!", "If You Feel Like You're Going Slow ... See Einstein's Theory Of Relativity ... The Planet Is Just Rotating Faster In The Other Direction Under You!", "My Cell Phone Number Is XXX-XXX-XXXX ... Please Call For Customer Service!" (which is actually the non-toll-free number for the Highway Patrol), "Why Did The Chicken Cross The Road?  To Keep Us Going This Slow!", "Distance Remaining To [destination ahead] XXX Miles ... YYY Miles [a much larger number than XXX] Counting The Potholes!", "Rear-View Camera Live Streaming Directly To The Highway Patrol.", "Huh ... The Speed Limit Is The Same As Your IQ!", "Don't Blame Me ... Blame The A$$HOLE Behind Me!", "Passenger ... Please Tell Your Driver To Pull His Cranium Out Of His Rectum ... Then Explain What A Cranium And A Rectum Are To Them.", "If You Can Read This ... Then I've Mistaken What Non-human Great Ape Species You Are.", and so forth.

Reactions as people pass me range from thumbs-ups from those with a sense of humor, to non-index-finger "salutes" ...
Title: Re: Top dolly speed
Post by: SargeW on May 27, 2019, 12:14:18 AM
Reactions as people pass me range from thumbs-ups from those with a sense of humor, to non-index-finger "salutes" ...

It's the "non sense of humor" types that concern me. Too many nutty people out there these days. I just stay to the right and let them pass without making eye contact.  I have seen the aftermath of too many "incidents".
Title: Re: Top dolly speed
Post by: SeilerBird on May 27, 2019, 12:30:28 AM
It's the "non sense of humor" types that concern me. Too many nutty people out there these days. I just stay to the right and let them pass without making eye contact.  I have seen the aftermath of too many "incidents".
You got that right Sarge. Ever since I moved to Florida I am the most respectful driver on the road.  I would not flip the bird to anyone down here. Every one carries and they are all not afraid to use it. ???
Title: Re: Top dolly speed
Post by: jim_manley on May 28, 2019, 03:41:52 AM
It's the "non sense of humor" types that concern me. Too many nutty people out there these days. I just stay to the right and let them pass without making eye contact.  I have seen the aftermath of too many "incidents".

You got that right Sarge. Ever since I moved to Florida I am the most respectful driver on the road.  I would not flip the bird to anyone down here. Every one carries and they are all not afraid to use it. ???

The message stating that they're on a live video feed is a statement of fact and the sudden change in behavior to docile is obvious, as that message appears in between every other message.  They're the one's offering the "salute", not me, but, they don't realize until it's too late that I have side cameras recording them, too.  My obvious military affiliation also generally earns respect points from The Good Folks ... and grudging obeisance from the Ne'er-Do-Wells.

Having been stationed in Florida a couple of times and visiting my Dad in the smallest municipality in the state, the sailing is nice, but, you can keep the heat and humidity.

Up here in Montana, there are very few troublemakers (and they're usually not from here), because there's no anonymity.  Flatlanders stand out like sore thumbs and are reported if they so much as look cross-eyed at anyone.  Plus, dirtbags have been getting the message that it's a lot more comfortable to operate in places a lot warmer than here.   You don't want to have enemies when, not if, it gets down to -40 F and you either get help ... or you don't, and assist with cleaning up the shallow end of the gene pool.
Title: Re: Top dolly speed
Post by: 1PlasticMan1 on May 28, 2019, 08:11:22 AM
Back to the original subject, I have a Master Tow Tilt-Bed Tow Dolly, model 80THD with brakes, and been towing my Chrysler T&C for the past three years, keeping the speed below 70 mph.  The T&C just about maxes out the load capacity the Master Tow indicates (4,900 lbs), but so far no problems.  Regarding California speed limits for towed units, I didn't know that the 55 mph speed limit was the law, until I got into the state and started seeing the signs immediately.  What a relief not having tractors with trailers whizzing by me at excessive speeds as I experienced in other states. :))
Title: Re: Top dolly speed
Post by: rbrdriver on May 28, 2019, 07:43:20 PM
Apparently you haven't travelled much in California yet. Trucks still "whizz by you" here at times anyways, irregardless of the "speed limit".  LOL   8)
Title: Re: Top dolly speed
Post by: 1PlasticMan1 on May 29, 2019, 11:34:10 AM
It always amazes me about how many truckers can't read.  Unfortunately they give the rest of the ones that can a bad rap.  I've found most truckers to be very courteous.  Also found that when I signal them that they have passed my coach safely, they appreciate it, and we seem to form a "bond" as we travel.  Most times, I would rather travel in a truck caravan.