How To Determine a Trailer Tire's PSI Rating
Updated 05/10/2021 | Published 05/07/2021
Question:
I am towing a travel trailer with dry wt of 3939lb and fully loaded 4500lb. What should the tire pressure be when towing? Thanks
asked by: Art L
Expert Reply:
In order to find the correct trailer tire inflation value, you must look on the sidewall of the tire itself. This will display the correct cold fill psi. The weight of the trailer is not a factor when determining psi but it is when selecting the correct load range. If you're looking to get more real-time info on both psi and temp which can be used to better predict failures then I highly recommend a TPMS like the TireMinder A1AS TPMS for RVs and Trailers part # TM49FR. I have attached a review video below.
Product Page this Question was Asked From
TireMinder A1AS TPMS for RVs and Trailers w/ Signal Booster - Bluetooth - 4 Tire Sensors
- TPMS Sensor
- Boat Trailer
- Camper
- 5th Wheel
- Motorhome
- Cap Sensors
- 4 Sensors
- Extended Range
- Color Monitor
- Smartphone Display
- TireMinder
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: What is Part Number for Blue Ox Apollo Non Binding Tow Bar
- Q&A: Recommended Way to Charge Vehicle Battery that is Being Flat Towed
- Q&A: Where And How Do I Install The Signal Booster / Repeater for TST TPMS TST-507-R
- Q&A: Replacement RV Step Motor for Part Number 9551
- Q&A: Timken Bearing Kit for Tie Down Engineering Hub 11033L
- Q&A: Recommended Lock for a B&W Companion OEM 5th Wheel Hitch
- Q&A: Is the TM22153 Available in a Nickel Plated Finish?
- Article: The 5 Best Trailer Drop Hitches You Can Buy
- Article: Which Sway Control Hitch is Right For Your Trailer?
- Article: Holiday 2025 | Best Gifts for RVing
- Article: Trailer Wiring Diagrams
- Article: How to Raise Your Travel Trailer Height
- Article: 7 Common Questions Everyone Has About Trailer Tires
- Article: Cleaning Your RV Black Water Tank in 4 Easy Steps