PDA

View Full Version : What is your PSI for your MC trailer tires ?


boatless
04-25-2007, 10:58 AM
Hello everyone,

What is your PSI for your trailer ?

Thanks,

boatless.

trickskier
04-25-2007, 11:05 AM
The sidewall on my 14" tires says inflate to 50 PSI Max Cold.

JohnnyB
04-25-2007, 11:38 AM
Good question. I always inflate to the max PSI for my trailers. However, i'm not sure what is the correct PSI.

It's not like a car where there is a label inside the door telling you the inflation level for the tires......

Chief
04-25-2007, 12:10 PM
Hello everyone,

What is your PSI for your trailer ?

Thanks,

boatless.

65 psi 15"

boatless
04-25-2007, 12:19 PM
65 psi 15"

That is what my has when I check, but did not think it was right. So I lower it to 40 psi.:rolleyes: Do you know it needs to be that high ?

boatless.

dmayer84
04-25-2007, 12:23 PM
Yes that is what mine is at also, The tires look low to me with 40 in them. And running tires low will cause the sides to become worn out.

trickskier
04-25-2007, 12:30 PM
That is what my has when I check, but did not think it was right. So I lower it to 40 psi.:rolleyes: Do you know it needs to be that high ?

boatless.
I would not lower the pressure. Lowering the tire pressure builds up heat that could cause a blowout........Please read this service bulletin from Goodyear: It actually say's you should increase the pressure if you are going to be pulling your trailer over 66 MPH.

http://www.tirerack.com/images/tires/goodyear/Marathon_Special_Trailer_Applications.pdf

Sodar
04-25-2007, 12:49 PM
I ran my 215/75/R15 Marathons at 45 psi on my tandem axle PS 190 trailer... light boat and tandem axle, I probably got away with less pressure.:confused:

Maristar210
04-25-2007, 12:51 PM
I ran my 215/75/R15 Marathons at 45 psi on my tandem axle PS 190 trailer... light boat and tandem axle, I probably got away with less pressure.:confused:

I heard that about you:D

trickskier
04-25-2007, 12:55 PM
Here's a Goodyear link with tire sizes and recommended tire pressures:

http://www.tirerack.com/tires/Spec.jsp?make=Goodyear&model=Marathon+Radial

Ric
04-25-2007, 01:06 PM
I think mine have 55psi,
they look great as I walk past them each week WITHOUT going skiing :mad:

rsk
04-25-2007, 01:10 PM
50 Cold , I am thinking about coming up a little though.

Sodar
04-25-2007, 01:10 PM
I think mine have 55psi,
they look great as I walk past them each week WITHOUT going skiing :mad:

Ric, when your boat is laid up that long, you should really put in on jack stands, to a prevent flat spot on the tires. Would you please take care of this, so I can rest easier tonight!! :D :D :D

east tx skier
04-25-2007, 01:17 PM
Anyone have an opinion with regard to the 10 psi increase for towing over 66 mph and the 14" rims stock on MC trailers through the 90s?

TMCNo1
04-25-2007, 01:36 PM
Ric, when your boat is laid up that long, you should really put in on jack stands, to a prevent flat spot on the tires. Would you please take care of this, so I can rest easier tonight!! :D :D :D

Radials aren't suppose to flatspot like the old bias ply from what I understand.

Sodar
04-25-2007, 01:39 PM
Radials aren't suppose to flatspot like the old bias ply from what I understand.

Just Hearsay!!! ;)

JKTX21
04-25-2007, 01:57 PM
I think my tires are at 50 PSI cold, but they definitely look a little squishy at that pressure. I freaked out one day when I checked them warm and let a ton of air out before I knew the pressure was acceptable that high. I don't drag my trailer far, so I'm less worried about it! :)

sand2snow22
04-25-2007, 02:12 PM
45 PSI cold.

Leroy
04-25-2007, 02:18 PM
Mine are 50psi, obviously from the different answers one should check the sidewall before changing the pressure ;)

trickskier
04-25-2007, 03:01 PM
Anyone have an opinion with regard to the 10 psi increase for towing over 66 mph and the 14" rims stock on MC trailers through the 90s?
I keep mine at 50 PSI cold.......Pressures increase as heat builds in the tires while being towed. I know what the bulletin says about towing over 66 MPH but I think adding an additional 10 PSI is too much.........I tow up to 75 MPH on the interstate and have never had a problem.

Chief
04-25-2007, 03:51 PM
That is what my has when I check, but did not think it was right. So I lower it to 40 psi.:rolleyes: Do you know it needs to be that high ?

boatless.

65 psi looks low when I see my boat to start compress tires on the road. I think the Maristar/X2 should come factory on the tandem axle because I believe the boat is to heavy for Load range "D" tires on a single axle.

JohnnyB
04-28-2007, 09:44 PM
Sidewalls on my tires say 65psi max cold pressure.

Maristar210
04-28-2007, 09:56 PM
Mine are 33psi to clear the Garage. Inflate, deflate, Inflate..

These tires must feel like Hoosier Bob's favorite gal...