What PSI Should I Inflate My Tires To
Question:
I have a 2015 Rockwood fiftg wheel that runs around 9,000 lbs loaded. The tires are St225/75R15’s and I just replaced the original D rated tires with E rated. The originals had a sidewall rating of 65 psi but the sticker on the side of the trailer said 50 psi. The new tires have a sidewall rating of 80 psi. Do I need that much pressure for a safe ride? I’m about to start a cross country trip and want to be safe.
asked by: Cliff A
Helpful Expert Reply:
Trailer tires should always be inflated to their maximum psi when the tires are cold. Running your tires at anything other than 80 psi will change the capacity of the tire to some unknown amount and can also cause the tire to heat up faster than it should which is what often causes tire failure.
You also need to make sure your wheels are rated up to 80 psi. This is usually dependent on the valve stem. If you need new stems rated up to 80 psi use part # AM20904.
Product Page this Question was Asked From
Americana High Pressure Rubber Snap-In Valve Stem - 1-1/2" Long - Up to 80 psi
- Tire Repair Tools
- Valve Stems
- Snap-In Stem
- 8 Inch Tire
- 10 Inch Tire
- 12 Inch Tire
- 13 Inch Tire
- 14 Inch Tire
- 15 Inch Tire
- Rubber
- 80 psi
- Black
- Americana
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Americana High Pressure Rubber Snap-In Valve Stem - 1-1/4" Long - Up to 100 psi
- Shop: Americana High Pressure Rubber Snap-In Valve Stem - 1-1/2" Long - Up to 80 psi
- Q&A: Trailer Tire Valve Stem Pressure Capacity for Changing to Load Range D Tires
- Shop: Kenda K353 Bias Trailer Tire - 4.80-12 - Load Range C
- Search Results: valve stem tool
- Shop: Grease Seals 10-36 (pair)
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Q&A: Replacement 5 Leaf Slipper Spring for a Tandem Axle Dump Trailer with Two 6K Axles
- Search Results: 44649
- Video: Choosing the Right Trailer Wiring
- Shop: Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Trailer Wiring
- Article: Trailer Tire Sizing
- Search Results: 68149
- Q&A: Replacement LED Top Command Clearance Light With SAE-AP2-16 On Lens For 2018 Sunseeker Motorhome
- Shop: Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Red Lens
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Brake Controller
- Search Results: 25580
- Video: Choosing the Right Brake Controller
- Q&A: Replacement Hub Needed for Lippert 122093 Hub on 5,200 lbs Axle
- Video: Roadmaster Automatic Battery Disconnect Installation - 2020 GMC Sierra 1500
- Shop: Fifth Wheel Hitch
- Shop: etrailer Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 5,200 lbs to 7,000 lbs
- Q&A: Does HBA-CAM Adapter Module for Hydrastar Electric Over Hydraulic Brake Actuators have 2 or 4 Wires
- Article: How to Choose the Right Trailer Hitch Class
- Search Results: dust cap
- Video: Demco Stay-IN-Play DUO Supplemental Braking System Installation - 2019 Jeep Wrangler
- Article: Most Popular Wheel Bearings
on Tire Repair Tools
