garmanmd

I'm now a little confused around tire pressure. My yellow sticker says max psi of 35. However the truck has Goodyear Wrangler AT Adventure with Kevlar tires where max pressure stamped on the side is 51. I'm towing a trailer with this vehicle total weight of trailer about 4500 lbs. So I'm assuming I go with what is stamped on the tire rather than the yellow sticker? I purchased this 2019 used, but it only had 7,300 miles so I'm assuming these tires came on the vehicle. So normally I would have expected the yellow sticker to correspond with the tires shipped. But perhaps not. Also interested if anyone has experience good or bad with these tires and towing. I saw in another thread that someone thought they increased his sway, but I haven't seen that anywhere else.

BCMIF150

The yellow sticker on the truck is the manufacturer recommended pressure for best performance, ride and comfort. The pressure listed on the tire is the max pressure it can hold.

Ricktwuhk

Correct.

Many people find that when towing a noticeable load, increasing the tire pressure, especially on the rear, results in better handling.

Try towing at 35 all around (checked cold). Drive an hour or so, stop and add 5 pounds to rear (check them warm, and add 5 pounds). Now drive another hour.

If still squishy feeling, I would raise front to 40 and put rear at 45, cold, or add another 5 pounds to warm reading.

Warm tires can be 2 to 4 pounds over cold.

MikeD134

Agree about raising pressure. If you remember years ago Ford used to recommend really low inflation pressures with Firestone tires to give a "nice ride" but that low pressure contributed to many accidents.

Ricktwuhk

But that was much lower. Ford recommended 26 for "stability", because the Explorer had too high a center of gravity and too narrow a stance. Firestone wanted 30. Tires failed in high numbers, 271 people died. I had them on my 1998 Explorer and got $100 per tire, including the spare as I recall. Put Michelins on.

https://en.m.wikipedia.org/wiki/Fire...re_controversy

Traxx

Go with the tire manufacturers pressure to weight chart for your specific tire. Most manufacturers have them squirreled away on the website somewhere.

bajaman

Max load capacity is at designated max pressure, if I remember correctly...

garmanmd

I went to Discount Tire and asked them and they said essentially the same thing. The ride and performance is best at the sticker psi, and while the tires can hold more psi, they don't recommend going to the max. Discount would likely add about 3 lbs to the sticker psi, but that would be it.

Traxx

So, just to be sure I took a look at the yellow sticker. There is no MAX tire pressure. Just cold tire pressure of 35. No minimum, no maximum, no towing pressure.

Gene K

If passenger rated tires start with P (P-Metric) the max load is rated at 35 psi. If it starts with the section width (Iso -Metric) then max load is rated at 36 psi. As I understand it as new tires are introduced the P will be dropped and we will move to 36 psi in an effort to bring TRA and ERTO ratings into harmony.

That assumes we are talking about Standard Load Tires.

The additional allowance for max cold pressure on tire sidewalls is to allow for special circumstances. Pulling a trailer that weighs twice what the truck weighs might qualify as one of those circumstances for increased stability even though the load rating is not increased.