About RV Tow Check

Revealing the whole truth about
Realistic Vehicle Towing Capacity
in the real world.

RV Tow Check is the only "before you buy" towing capacity calculator app of its kind that complies with all manufacturers' weight safety and warranty warnings. RV Tow Check may confirm what a salesperson told you or reveal an error in information. RV Tow Check displays realistic vehicle towing capacity for fifth wheel or gooseneck, and conventional trailers (bumper pull) simultaneously and provides instant results when selecting various kingpin or tongue weight percentages. RV Tow Check is the only mobile friendly towing calculator that complies with the SAE J2807 TWR Calculation guidelines and correctly answers the most often asked questions, "How much can my truck tow?" or "How much can my SUV tow?" or "How much can my motorcoach tow?"

Use RV Tow Check to learn what your current vehicle or a potential vehicle may tow without exceeding the weight safety ratings. Our FAQ page answers most questions.

RV Tow Check iPhone ImageWhat Others Are Saying

"This is the best towing calc tool I've used so far." [sic] B. Pollock, Facebook

"This calculator makes it much more obvious and easy to understand just what we are doing. Thanks." Heartland RV Club member

"RV Tow Check App should be called the RV Sales BS Detector." [sic] RV forum member, 8Muddypaws

"I just had a tough time deciding which Ram 3500 CC 4x4 to choose. 68RFE or Aisin transmission. Short bed or long bed. SRW or DRW. I choose the long bed, DRW with Aisin. Using the calculator I am golden for towing my 15,500 GVWR 5th wheel. But, if I had chosen the 68RFE transmission, I would be right on the edge. The other options would have put me under." [sic] Heartland RV Club member

"I've decided after… punching my daughter's trucks numbers into the RV Tow Check app, there is "NO 1/2 ton 5th wheel" under the 6000 lbs GVWR, that her F150 should be able to safely tow!!! Dad is going to wise up and recommend she shop for a bumper pull." [sic] Heartland RV Club member

The RV Tow Check App is available for iOS devices and Android devices.

Trailer Towing Guides Don't Work As Intended

Practically all towing guides give RVers just enough information that may cause them to purchase a trailer too heavy for their tow vehicle's capabilities. Towing guides listing Trailer Weight Ratings or Maximum Tow Capacity or Tow Weight Ratings fail to take into consideration the different towing requirements between 5th wheel and conventional trailers. These common guides do not consider the additional weight created by the fifth wheel trailer kingpin. Then there is the problem of knowing the real tow capacity of a newly purchased tow vehicle after it is fully loaded with passengers, cargo, and a new hitch. Even the creators of the most well known towing guide published by Trailer Life devoted four pages of instructions, entitled "Choose Wisely," that spells out the details required for selecting the correct towing combination.

A Quote From the 2015 Trailer Life Towing Guide

"WEIGHT: The tow-ratings guide in this section lists the maximum tow ratings for vehicles with specific equipment, but many buyers interpret the maximum vehicles' tow ratings with far too much optimism. Always check the manufacturer's figures before making a purchase. The following is an explanation of the terms you need to know which, when combined with readings from a public scale and from your own calculator, should help you determine the correct tow rating for the tow vehicle you plan to buy." (Note: Trailer Life discontinued the article containing this quote beginning with the 2016 issue.)

Even Trailer Life's Towing Guide does not include the weight safety formula for calculating towing capacity based on available payload.

Manufacturer's specs+tow vehicle weight+RV Tow Check=Realistic Vehicle Towing Capacity

Let's get real—None of the towing guides have improved this statistic.

The RV Safety and Education Foundation (RVSEF) data indicates that 60% of all tow vehicles on the road exceed one or more weight safety ratings. "Many of these trucks exceed all of their ratings." (Walter Cannon, RVSEF Video, @14 minutes, 50 seconds)

The 75% or the 80% rule of thumb? Is it a safe towing margin? Learn why not here.

About RV Tow Check 3.0

RV Tow Check is the industry-leading mobile device towing calculator app that safely answers age-old questions like these:

  • "How much can I tow?"
  • "How much can my truck tow?"
  • "How much can my SUV tow?"
  • "What is my truck's fifth wheel towing capacity?"
  • "What is my SUV's towing capacity?"
  • "What is my truck's towing capacity?"

The minimum requirement for RV Tow Check requires four inputs by the buyer or dealer. They are gross combination weight rating (GCWR), gross vehicle weight rating (GVWR), the gross vehicle weight (GVW), and trailer weight ratings (TWR) for fifth wheel, gooseneck and conventional trailers. The user has the option to select a fifth wheel hitch if it's not already installed in the truck. They may include any additional unscaled weight for cargo and additional passenger weight. The app does not assume everyone weighs 150 pounds like the manufacturers do. We believe in keeping our towing capacity calculator simply easy to use, and provide realistic towing capacity that is as accurate as the weights you enter into it.

The RV Tow Check app may look simple on the outside, but the engine on the inside is strong, and the sophisticated math formulas perform multiple calculations and make decisions that should make any buyer or dealer grateful. RV Tow Check is a GVWR calculator (ensures the payload won't be exceeded) and a GCWR calculator all-in-one. With the four minimally required user inputs and the selection of the highest range of pin and tongue percentages, buyers and dealers can be confident that the RV purchase or sale is unlikely to exceed the vehicle's GCWR, GVWR, GAWR, and TWR. There are two outputs shown, one for the fifth wheel or gooseneck towing combination and the other for the travel trailer (conventional) towing combination. RV Tow Check is the first app that displays fifth wheel or gooseneck and conventional RV classifications simultaneously and provides instant results when selecting various pin or tongue percentages.

We are confident that the RV Tow Check app will aid thousands of RV buyers and dealers in making better choices for the RV purchase or sale. Buying an RV is big life investment decision. RV Tow Check will help with part of that decision. Additionally, we anticipate that the RV Tow Check app will become an industry standard for consumers and dealers.

RV Tow Check is accessible on all devices with a web browser and Internet access. Bookmark http://RVtowCheck.com on your computer or mobile device right now.

Looking for a load calculator for a truck camper? We have that too—tcLoadCheck.com

This complimentary app is provided by FifthWheelStreet.com having over 200 pages of RV safety related information.
Fifth Wheel St Logo

Fifth Wheel Street. (FWS) is the one-stop, self-help RV safety website providing tow capacity information, tow ratings, towing guides, and important RV assistance to match up tow vehicles and trailers correctly, the first time. Our weight safety calculators with the industry-leading 13-point Weight Safety Report for 5th wheel or gooseneck trailers and conventional trailers will expose the truth about your current load conditions. We provide free web based RV calculator apps as well as mobile device apps. FWS assists all RV travelers, including truck camper owners, all who tow fifth wheel or gooseneck trailers, and conventional trailers such as bumper pull travel trailers, boat trailers, and utility trailers, as well as motorcoaches towing a car or trailer.

Our Mission

Fifth Wheel Street. is dedicated to promoting recreational vehicle safety by providing educational materials, simplified weighing worksheets, free web-based RV safety calculator apps with weight safety reports to assist truck camper owners and all who tow fifth wheel, gooseneck and conventional towables.

Our Vision for RV Tow Check

To aid in the reduction of tow vehicles exceeding weight safety ratings to the level of 30% by 2025.