Mixed Tire PSI question

[FlyGuy]

4 wheel trailer, standard equipment with 21SPX. One of the rear tires picked up a screw and had to be replaced, and new tire has printed on it 'Inflate to 65 PSI'. However, the other three say 50 PSI Max, and the trailer sticker lists load capacity at 50 PSI (though it doesn't say 50 PSI MAX). So, do I inflate the oddball to 65 PSI, or keep it at 50 PSI like the rest? (It's 50 miles to the launch, maybe 5x/year, probably less than 1K on the other three).

Thanks!

 

[scoflaw]

Give odd ball what the others are getting

 

[Lazy Daze]

Looks like you bought a tire with higher load capacity rating. Like a D-rating, where the originals are C-rated, maybe? Or, if you went with the recommendation from the person at the tire store, then tell them they sold you the wrong tire and to exchange it.

Never came across this problem before. Scof... do you think running at the lower pressure would cause it to overheat? Maybe not since that tire isn't being used to it's max? Just not sure how much being 15psi low is going to "bubble" that tire.

 

[hottoddie]

Do you have a spare for the trailer? If not buy a tire and rim that matches the other 3 and make the "oddball" a spare. Towing those distances I would a spare.

 

[Woody]

Looks like you bought a tire with higher load capacity rating. Like a D-rating, where the originals are C-rated, maybe? Or, if you went with the recommendation from the person at the tire store, then tell them they sold you the wrong tire and to exchange it.

Never came across this problem before. Scof... do you think running at the lower pressure would cause it to overheat? Maybe not since that tire isn't being used to it's max? Just not sure how much being 15psi low is going to "bubble" that tire.

If it's a ST tire it should be inflated to MAX.

 

[Henry Boyd]

If it's a ST tire it should be inflated to MAX.

That’s correct, but running mixed tires would concern me. I think Dennis is right and the best solution is to have four matching tires.