The RV tire pressure chart shows recommended cold inflation pressure for common RV tire sizes. Enter your tire size or select from common RV tire sizes to see maximum load capacity and proper inflation pressure by load range.
Tire Pressure Lookup
Common RV Tire Reference
| Tire Size | Load Range | Max PSI | Max Load (lbs) | Common Use |
|---|---|---|---|---|
| ST225/75R15 | E | 80 | 2,830 | Travel trailers |
| ST235/80R16 | E | 80 | 3,520 | Travel trailers / 5th wheels |
| ST245/75R16 | F | 95 | 3,640 | Heavy 5th wheels |
| 225/70R19.5 | G | 110 | 4,080 | Class C motorhomes |
| 295/75R22.5 | H | 120 | 6,175 | Class A diesel pushers |
RV Tire Pressure: Why It Matters and How to Get It Right
RV tire blowouts are one of the most common causes of RV accidents. Most blowouts result from underinflation, not overloading. A tire running at half its rated PSI generates excessive heat that weakens the sidewall and causes catastrophic failure — often with no warning.
Always Inflate to Load, Not Placard
Unlike passenger cars, the pressure on the door placard of a tow vehicle may not match the RV trailer's tire requirements. Always inflate RV tires to the maximum cold pressure shown on the tire sidewall, or use the tire manufacturer's load/inflation tables to find the correct pressure for your actual axle load. Weigh your rig at a certified truck scale to know your actual per-axle weight.
Cold Inflation vs Hot Inflation
Always check and set tire pressure when cold — before driving or at least 3 hours after stopping. Driving heats tires and increases pressure by 10-15% or more. Never bleed air from hot tires to hit the target PSI — the pressure will be too low when the tires cool. Set cold and let them come up to proper operating pressure naturally.
Frequently Asked Questions
Is this RV tire pressure chart free?
Yes, completely free with no signup required.
What PSI should RV tires be inflated to?
RV tires should be inflated to the maximum cold inflation pressure shown on the tire sidewall, or to the pressure recommended for the actual load by the tire manufacturer's load and inflation tables. Don't use the vehicle door placard pressure for RV tires — it may not match the actual load. Inflate cold (before driving) for accurate readings.
What does tire load range mean?
Load range (E, F, G, H) indicates the tire's construction and maximum load at a specific inflation pressure. Load Range E (10-ply rating) is standard for most travel trailers. Load Range G (14-ply) is used on heavy fifth wheels and Class A motorhomes. Higher load range allows more weight and higher inflation pressure.
How often should I check RV tire pressure?
Check tire pressure before every trip and during extended travel at least once per week. RV tires lose air more slowly than car tires, but a 10-20 PSI difference from correct inflation affects handling and accelerates wear significantly. A TPMS (tire pressure monitoring system) is strongly recommended for all RVers.
Can I use a regular gauge for RV tires?
Most RV tires are inflated to 65-110 PSI, which exceeds the range of standard car tire gauges (max 60 PSI). Use a commercial-grade or truck tire pressure gauge rated to at least 120 PSI. Many RVers use a digital gauge with a large pressure range for accuracy.