Correct Inflation Pressure for Trailer 4.80-12 Trailer Tires
Updated 05/21/2025 | Published 07/17/2017
Question:
What if the tires I have say trailer tires but are not marked ST? Do I still inflate to Max pressure. Carlisle 4.8 - 12.0 sport trailer
asked by: Rad M
Helpful Expert Reply:
Tire size 4.80-12 is not found on vehicles, but is a common trailer tire size on smaller utility- and sport-type trailers. In trailer use you do want to inflate them to the maximum cold psi pressure noted on the tire sidewall. Trailer tires should never be under- or over-inflated since they can deliver their rated weight-carrying capacity only when inflated to their specified pressure. Incorrect inflation can lead to excessive heat which is the main cause for tire failure.
All of our tires in this size are shown on the linked page; note these vary in their rated pressure. Most require 90-psi but a few are rated for 60-psi.
T F.
5/21/2025
It also says that 450 pound weight so that trailer with two tires can carry 900 pound maximum
Jameson C.
5/21/2025
Product Page this Question was Asked From
Loadstar 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Trailer Tires and Wheels
- Tire with Wheel
- Bias Ply Tire
- Load Range C
- 4.80-12
- 12 Inch
- 5 on 4-1/2 Inch
- Steel Wheels - Galvanized
- Kenda
more information >
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Tom F.
5/19/2025
Thank you for a quick summary of what I needed to know a lot of webpages don’t do that