Recommended ST225/75R15 Trailer Tires for 31-Ft 5th Wheel to Avoid Tire Blowouts
Published 10/15/2015
Products Featured in This Question
Question:
What is your recommendation for new tires on a 31ft 2001 Forest River Wildcat 5th wheel camper. Double axle. Right now we have Maxxis radial M8008 ST 225/75R15 on it Load range E. Two are new this year and two are from previous 2 yrs. We have blown several tires and are tired of this. We are wanting to go to a higher load range and possible bigger tire. What advice can you give us.
asked by: D
Expert Reply:
A trailer tire's worst enemy is heat. Excessive heat will weaken a tire and lead to its premature failure. The most common causes for a trailer tire to overheat are overloading it beyond its rated weight capacity and incorrect inflation pressure.
If you replace Load Range E tires with F- or G-rated tires their higher weight capacity will tend to mean reduced operating temperatures, all other things being equal. And of course, all trailer tires should always be inflated to the maximum pressure as noted on the tire sidewall. It is never appropriate to over- or under-inflate a trailer tire.
Note that your trailer's wheels will also carry weight and psi pressure ratings, just as your tires do. If you mount a tire on a wheel and the two have different ratings, then the lower-rated of the two will determine the overall capacity of the combination. So in other words, mounting a 2000-lb rated tire on a 1500-lb-rated wheel results in a combination having a 1500-lb rating.
In your ST225/75R15 size we offer tires in load ranges C, D and E but not higher. Our load range E tire in your size, Kenda # AM10303, carries a maximum weight rating of 2,830-lbs at 80 psi. The Maxxis M8008 ST225/75R15 radials (their part number TL15710000) according to their website have a weight rating of 2540-lbs. If this is the tire you're using then you could gain a worthwhile safety margin by switching all tires to the Kenda above.
You could also potentially move up to a larger wheel and tire size if your trailer has enough clearance. A ST225/75R15 tire has an overall diameter of about 28-1/2-inches. An ST235/80-16 tire has an overall diameter of about 31-inches, and of course it is 10mm wider. This is a fairly big jump so I'd advise checking with Forest River (using your trailer's VIN) to see what have to say about using this much larger a tire size. The Provider tire in this size that we offer, part # TTWTRTM2358016E, carries a Load Range E rating of 3520-lbs at 80-psi.
Product Page this Question was Asked From
Provider ST235/80R16 Radial Trailer Tire - Load Range E
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range E
- 235/80-16
- 16 Inch
- M - 81 mph
- Taskmaster
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Search Results: weigh safe weight distribution hitch
- Shop: TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster - 4 Flow Through Tire Sensors
- Shop: Weigh Safe True Tow Weight Distribution Hitch - 2" Shank - 6" Drop - 8.5K GTW, 850 lbs TW
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Shop: RV LED Light Side-Slide Dimmer Switch - Black
- Shop: Performance Chip Tuners
- Shop: Trailer Hitch
- Shop: Tonneau Cover
- Search Results: door keys
- Search Results: cam locks rv door locks
- Search Results: trailer tires and wheels
- Video: MORryde Standard Frame Hanger X-Factor Crossmember Installation - 2022 Grand Design Imagine Travel T
- Video: The Low-Down on the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package
- Video: Set up: B and W Heavy-Duty Trailer Hitch Receiver on a 2007 Ford F-250 and F-350 Super Duty
- Video: Install: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket on a 2018 Chevrolet Traverse
- Video: Breaking Down the TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster
- Search Results: fuel station
- Search Results: fuel transfer pump
- Search Results: discount code fbf99
- Video: Review of LaSalle Bristol RV Sewer - Waste Valves - 34466N11AB72GMA
- Shop: Global Link RV Entry Door Locking Latch Kit with Keyed Alike Option - Black
- Q&A: Best Equalizer Suspension Upgrade For Tandem 3,500 lb Axles
- Shop: TireMinder Smart TPMS for RVs - Signal Booster - 4 Tire Sensors
- Shop: Karrier KR03 ST225/75R15 Radial Trailer Tire - Load Range E
- Q&A: How Does Sway Control Work on B&W Continuum Weight Distribution System 1,600 Lbs
- Q&A: Comparing B&W Continuum And Reese Strait-Line Weight Distribution Systems
- Q&A: Availability of Replacement Key for Camco Cam Lock
- Q&A: How to Choose the Correct Axle Capacity for Trailer
- Q&A: Trailer Tire Recommendation for Tire Size ST235/85R16
on Trailer Tires and Wheels
