www.iFourWinns.com

I hope............The trailer had brand-new 225/75R15 tires on it when I bought it. They were not trailer tires, and only rated @ 1250#. Had several friends say "awe hell, they'll be fine". They won't be the one on the side of the road in 90-plus heat changing a blow-out........So went with these Gladiator QR25-TS, E rated trailer tires with 2830# @ 80 PSI. But 80 PSI ??? With heat transfer from very hot pavement, I'm kinda scared to start out @ 80.

Thought I'd start at 70 and keep a check on them on our up-comming road-trip.
Bought two new wheels too at Northern-tool,(42.00 ea.) now I've got two spares.

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Jimbo
Na. Ga.

2000 170 Horizon LS
4.3GL

Nice job. The people who say "Aw hell, they'll be fine" are usually the same people who say "Watch this" right before the ambulance is called. As to the pressure - tires will run hotter as you decrease pressure. The cold inflation pressure molded into the sidewall accounts for pressure increase while running. Generally it's best for the tires to run them at max pressure.

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Mike
2005 Four Winns 230/240
VP 5.7GXi/DP
1998 F-150 XLT
Boat Pic

It is a good idea to run the rate pressure in a trailer tire. Anything below that will cause flexation in the sidewall and it generates excessive heat at the point of connection between the cap and sidewall. This will possibly lead to a blow out.
Getting an E rated tire is the smartest thing to do, but it won't help to run less pressure in it.

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1992 Baja 38 Special Twin 502 Mags

03 Stingray 3.0
88 261 Liberator 460 King Cobras
95 Bayliner 1850 3.0
77 Fiber Form 20ft 350/385hp
70 Wescraft 1800 SS 455 Jet

Lead, Follow, or get the Hell out of the Way!

How much did you pay for those tires? I need some new shoes as well. P/O has similar (1250) lb rated on my trailer.

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-Tony
2016 Robalo R200 w/Yahama 200!

Previous boats:
2003 Four Winns 248 Vista - sold
1994 Sunbird Corsair 200 - sold
1980 Checkmate Predictor - sold

A passenger 225/75-15 would usually be rated at about 1874 at 44 psi, but used on a SUV or RV they have to be de-rated to 91% of capacity, so that's only 1705 each, for a total of 3410. A C rated trailer tire 225/75-15 would be rated at 2150 @50 psi, for a total of 4300 lbs and a D rated tire in the same size, 2540 @65 psi. For that boat and trailer, the passenger or p rated suv tires would have been inadequate, but the trailer tires in the same size would be fine, even the C rated 225s, although the D rated ones give more safety margin. Tires built for light truck and trailer use can be used at their full rated capacity, unlike using a P rated tire on a SUV or trailer. But you need to always run them at the right inflation pressure. An E rated tire will do fine, probably overkill for a single axle trailer with a 19 ft boat, but make sure you run them at the max psi. Running them at less will make the tire run hot and fail. Take a look at this chart, it gives you a guide of how much different size RV and trailer tires can support at different inflation pressures.

http://www.goodyear.com/rv/pdf/rv_inflation.pdf

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

Thanks guys. I was thinking backwards on the air-pressure then. I'll fill'em to 80.

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Jimbo
Na. Ga.

2000 170 Horizon LS
4.3GL

taz-
Bought them here-

http://cgi.ebay.com/ebaymotors/TWO-2-NE ... 43a74f34e8

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Jimbo
Na. Ga.

2000 170 Horizon LS
4.3GL