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post #1 of 21 (permalink) Old 05-12-2012, 11:50 AM Thread Starter
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Trailer tire pressure?

How do I find out the proper tire pressure for the tires on my boat trailer?? I don't see it marked anywhere on my trailer and the tires only call out a max pressure.
I have a 16' jon boat on a Tilly trailer. Right now the tires are at 25 lbs I believe and that seems about right to me.
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post #2 of 21 (permalink) Old 05-12-2012, 07:51 PM
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Re: Trailer tire pressure?

I never had a tire go bad except for long wear. With that said, I always go about 5 PSI under the max pressure. I do the same in my truck tires. I got excellent life out of my BF Goodrich tires the last set! 20 year of pulling the same boat around, I am only on my second pair on the trailer.

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post #3 of 21 (permalink) Old 05-12-2012, 08:42 PM
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Re: Trailer tire pressure?

I run both of my trailers at max pressure. Both use the same size tires and they are inflated to 50 psi.

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post #4 of 21 (permalink) Old 05-13-2012, 12:22 AM Thread Starter
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Re: Trailer tire pressure?

Wow, I better up the pressure in mine!
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post #5 of 21 (permalink) Old 05-13-2012, 09:38 AM
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Re: Trailer tire pressure?

The biggest problem with trailer tires is heat and that comes from underinflation. It won't hurt to keep a tire inflated, but it will hurt the tire if it is underinflated. I have run my small boat trailer for about ten years on each of the first two sets of tires on it. The big boat is a 25' hardtop express fisherman and it has been towed to Chesapeake Bay and Lake Ontario and the tires always run cool at max pressure. Over 5000 miles and no sign of wear.

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post #6 of 21 (permalink) Old 05-13-2012, 02:37 PM
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Re: Trailer tire pressure?

Quote:
Originally Posted by G-Daddy
The biggest problem with trailer tires is heat and that comes from underinflation. It won't hurt to keep a tire inflated, but it will hurt the tire if it is underinflated. I have run my small boat trailer for about ten years on each of the first two sets of tires on it. The big boat is a 25' hardtop express fisherman and it has been towed to Chesapeake Bay and Lake Ontario and the tires always run cool at max pressure. Over 5000 miles and no sign of wear.
That is the same reason I do the same for my vehicles. The sticker inside the door always shows tire pressure recommended by that manufacture. But yet the tire shows different. This is probably the reason I got great life on that set of BF Goodrich's. I ran the pressure up higher. Also, you can feel that the vehicle seems to roll better. Less resistance on the road. Less friction, and maybe better gas mileage too.

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post #7 of 21 (permalink) Old 05-13-2012, 10:57 PM
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Re: Trailer tire pressure?

Any opinions re keeping pressure at max could help avoid sidewall dryout/rot?

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post #8 of 21 (permalink) Old 05-14-2012, 06:35 PM
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Re: Trailer tire pressure?

Loggy. I would imagine that low pressure could cause sidewall cracking that might appear to some as dry rot. Trailer tire sidewalls are not as thick and tough as car tires. They can't handle flexing as well or so I've always thought, making full pressure more important than on a car tire. Just a wild guess though. Never checked into it.

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post #9 of 21 (permalink) Old 05-14-2012, 06:40 PM
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Re: Trailer tire pressure?

Quote:
Originally Posted by Deuce280
How do I find out the proper tire pressure for the tires on my boat trailer?? I don't see it marked anywhere on my trailer and the tires only call out a max pressure.
I have a 16' jon boat on a Tilly trailer. Right now the tires are at 25 lbs I believe and that seems about right to me.
Keep in mind that a single axle trailer only has 2 tires to carry the load unlike a car that spreads the load over 4 tires. So, PSI range might be higher than a car tire. See my repsonse to Loggy as well.

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post #10 of 21 (permalink) Old 05-14-2012, 09:25 PM
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Re: Trailer tire pressure?

Quote:
Originally Posted by MrC
Loggy. I would imagine that low pressure could cause sidewall cracking that might appear to some as dry rot. Trailer tire sidewalls are not as thick and tough as car tires. They can't handle flexing as well or so I've always thought, making full pressure more important than on a car tire. Just a wild guess though. Never checked into it.
Thanks. More i think about it...gonna keep pressure at max.

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