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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Trailer Tires vs Passenger Car Tires		  New Topic  Topic Locked
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Dan Greer
1st Mate

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USA
36 Posts
Initially Posted - 07/01/2006 :  00:12:39  Show Profile
The guys at my local Discount Tire shop want me to buy special trailer-rated tires for about twice the price of inexpensive passenger car tires.

They say that the trailer-rated tires are better because they're 6-ply.

But they also say that about half of the trailer owners ignore their advice and buy passenger car tires anyway.

I guess it's always nice to buy the best (we've all got piles of old used money laying around anyway), but the obvious question is, if passenger car tires seem to work, why buy better than you need?

Any experts out there?
Dan Greer
1989 C-25 SR WK
Phoenix, AZ
Edited by - on

atgep
Master Marine Consultant

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1009 Posts
Response Posted - 07/01/2006 :  01:54:36  Show Profile
Passenger tires will not work for a heavy load like our boats. They simply are not strong enough. They will also sway more than trailer tires as they have weaker sidewalls. Trailer tires are not that much anyways.

Tom.
Edited by - atgep on 07/01/2006 01:55:17
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Gloss
Master Marine Consultant

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USA
1916 Posts
Response Posted - 07/01/2006 :  07:33:02  Show Profile
consider if you will explaining in a deposition to a plaintiff's attorney why you chose to use cheap passenger tires on your heavily loaded trailer, and how it affected your load when it swayed and hit his client's car.

consider your insurance company's position on this also
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 07/01/2006 :  07:39:39  Show Profile  Visit Frank Hopper's Homepage
And most SUVs have passenger tires which make them flip and roll over due to thin sidewalls. Buy real trailer tires.
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 07/01/2006 :  09:22:13  Show Profile  Visit Leon Sisson's Homepage
Like the others have already said, get the trailer tires for their sidewall stiffness and load carrying capacity. It's not safe to tow heavy loads on non-trailer tires.
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 07/01/2006 :  09:35:00  Show Profile
Get the heaviest, gnarliest ST-rated (trailer tires) that will fit your rims. Shop around for the highest load rating you can find.

A C-25 is a substantial tow (6,500 lbs for an empty swinger) and even heavy-duty tires available for the stock 14" rims are loaded close to their rated limits.
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At Ease
Admiral

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672 Posts
Response Posted - 07/01/2006 :  12:46:51  Show Profile
Sidewall stiffness is key. When dragging a tandem axle trailer around a corner the stress of the 'dragging' (they are not turning) on the side wall is why you need a trailer tire and not a passenger car tire.
Edited by - At Ease on 07/01/2006 12:48:12
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johnsonp
Admiral

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USA
606 Posts
Response Posted - 07/01/2006 :  13:08:32  Show Profile
<font color="blue"><font size="4"><font face="Comic Sans MS">Side wall stiffness is the number one consideration.
I own stock in Goodyear, I should know......right?
paulj 250WK #719</font id="Comic Sans MS"></font id="size4"></font id="blue">
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Waterboy
Navigator

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USA
204 Posts
Response Posted - 07/01/2006 :  18:30:29  Show Profile  Visit Waterboy's Homepage
Well shame on me then for buying the cheap used passenger tires in Baja ... we shredded three ... all on the trailer, all on the right side, all after dropping the trailer's tires off the pavement in efforts to avoid head-ons with large trucks on Baja's highway 1... in my defense I would offer it was the only option available, and we towed with a one-ton dually.

PS - how in the world do I rate as Admiral?
Edited by - Waterboy on 07/01/2006 18:31:49
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At Ease
Admiral

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672 Posts
Response Posted - 07/01/2006 :  18:56:55  Show Profile
I didn't know tires (or even wheels) were required when pulling with a dually!!
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Waterboy
Navigator

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USA
204 Posts
Response Posted - 07/01/2006 :  22:36:44  Show Profile  Visit Waterboy's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by At Ease</i>
<br />I didn't know tires (or even wheels) were required when pulling with a dually!!
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

They're not really ... this rig will pull the teeth out of an elephant. But the mileage is better (less hideous) when the trailer has tires, on wheels, attached with at least three lug nuts and inflated with at least atmospheric pressure air.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 07/01/2006 :  22:39:22  Show Profile  Visit Frank Hopper's Homepage
Waterboy, we officers hold monthly meeting and rate the forum posters for credibility and quality of contributions, we are proud to grant you the title of Admiral, you have earned it.




... or you went over 200 posts!
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Dan Greer
1st Mate

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USA
36 Posts
Response Posted - 07/06/2006 :  01:04:55  Show Profile
Okay, Okay! I get the message!

Opinion seems to be pretty unanimous that cheap tires are a bad idea.

Thanks very much for your input, guys, you probably saved me money in the long run, eh?
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.