Fifth Wheel St. has launched RV Tow Check 2.0, featuring a new interactive feature that allows users to select various pin or tongue weight percentages.

According to a press release, RV Tow Check’s upgrade lets users view instantly the possible towing capacity changes as they select different pin and tongue weight percentages. RVers unsure of pin or tongue percentages can refer to a color coded range to help determine a safe margin for towing capacity. The app’s instructions, definitions and the FAQ page have also expanded. Additionally, the app’s calculator page includes a detailed description of how the calculator works.

Founder Dave Gray reported that since the debut of RV Tow Check in September, daily calculations processed have grown to more than 150.

“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,” said Gray. “Towing guides listing maximum tow capacity fail to take into consideration the different towing requirements between fifth-wheel and conventional trailers. These common guides do not consider the additional payload weight created by the fifth-wheel trailer pin weight.”

Gray said that the minimum requirement for RV Tow Check requires three inputs by the buyer or dealer, including gross combination weight rating (GCWR), gross vehicle weight rating (GVWR) and the gross vehicle weight (GVW). The user has the option to select a fifth-wheel hitch if it’s not already installed in the truck. Users may include any additional unscaled weight for cargo and additional passenger weight.

“The RV Tow Check app may look simple on the outside, but the engine on the inside is strong, and the sophisticated math formulas performs multiple calculations and makes decisions that should make any buyer or dealer grateful,” said Gray. “With the three 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 and GAWR.”

For more information visit http://RVtowCheck.com .