Tire Recommendation?

[Geronimo John]

On 6/22/2024 at 5:10 PM, MAX Burner said:

FYI, after upgrading to the Alcan 5-spring leafs, new shocks, and D52 axles, we increased our tire pressure from 40PSI to 45cold -

Why?

[jd1923]

3 hours ago, Geronimo John said:

Why?

I run 45 PSI highway and when boondocking on local washboard roads I reduce to 38 PSI. I was just testing our new suspension over speed bumps at 45 PSI and I could see the tires nicely compress while taking in the speed bump. 40 PSI is enough however since we are certainly running less than 7K LBS GTW.

Some have written they will lower the tire PSI because of the stiffer springs. PSI should be determined on trailer weight. This upgrade has likely added about 150 LBS in heavier parts. Running D52 axles and Alcan springs going a little over the 7K GTWR should not be a big deal. With axles, springs, wheels and tires that can handle over 10K LBS, only the Oliver frame is the limiting factor. We know a member with multiple upgrades, upgraded suspension with disc brakes, my guess is he is well over 8K LBS actual GTW.

45 PSI is a good MAX number for most. I do not believe in adding PSI as a buffer allowing notification time using a TPMS. The PSI should be adjusted for actual GTW only. On the Michelin Agilis 40 PSI gives you 7,180 LBS and 45 allows up to 7,800. 50 PSI allows for 8,360 LBS GTW. Do you need more pressure?

Edited September 10, 2025 by jd1923

[Chris Scarff]

No need to discuss tires further. I just wanted to put together an easy-to-read chart of all the common tires I see that we're using on our Elite II TTs as of January 2026. Let me know if I left out any common tire.  

Hope it helps get new owners going quickly without too much "trudging" through old forum threads.  🤷‍♂️

* Always follow the inflation guidelines of your brand and model of tire.

PDF file attached.

Tire Inflation Chart for Oliver Elite II Travel Trailers

Updated: 20 January 2026
 

Michelin Agilis CrossClimate (LT225/75R16) (16" rims)

Tire Size	35 psi	40 psi	45 psi	50 psi	55 psi	60 psi	65 psi	70 psi	75 psi	80 psi
LT225/75R16	-	1650 lbs	1790 lbs	1940 lbs	2060 lbs	2190 lbs	2335 lbs	2440 lbs	2560 lbs	2680 lbs

 

Cooper Discoverer HT3 (LT225/75R16) (16" rims)

Tire Size	35 psi	40 psi	45 psi	50 psi	55 psi	60 psi	65 psi	70 psi	75 psi	80 psi
LT225/75R16	1500 lbs	1650 lbs	1790 lbs	1940 lbs	2060 lbs	2190 lbs	2335 lbs	2440 lbs	2560 lbs	2680 lbs

 

Goodyear Endurance ST225/75R15 (15" rims)

Tire Size	35 psi	40 psi	45 psi	50 psi	55 psi	60 psi	65 psi	70 psi	75 psi	80 psi
ST225/75R15	1760 lbs	1880 lbs	2020 lbs	2150 lbs	2270 lbs	2380 lbs	2540 lbs	2620 lbs	2720 lbs	2830 lbs

 

Here are some inflation and load examples for Elite II travel trailers (four tires):

 

@ 45 psi:

1,790 lbs x 4 tires = 7,160 lbs total weight (LT tires)

2,020 lbs x 4 tires = 8,080 lbs total weight (ST tires)

 

@ 50 psi:

1,940 lbs x 4 tires = 7,760 lbs total weight (LT tires)

2,150 lbs x 4 tires = 8,600 lbs total weight (ST tires)

 

@ 55 psi:

2,060 lbs x 4 tires = 8,240 lbs total weight (LT tires)

2,270 lbs x 4 tires = 9,080 lbs total weight (ST tires)

Tires Inflation Chart.pdf

Edited Friday at 08:57 PM by Chris Scarff