Date: Tue, 21 Jan 2014 21:24:56 -0800
Reply-To: "SDF ( Scott Daniel Foss )" <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "SDF ( Scott Daniel Foss )" <scottdaniel@TURBOVANS.COM>
Organization: Cosmic Reminders
Subject: Re: Volksiebus - 88 Transporter - Tire sizes
In-Reply-To: <BAY179-DS15CBF90A799A2D16BFC76CA0A70@phx.gbl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
the actual dimensions of tires of the same size vary widely of course.
and two 185 R14C's from the same manufacturer ..same model tire..
just one being 6PR ( C load rating ) and the other being 8PR ..those
sure better be very, very close in dimension.
if getting that 'detailed' ..then tire pressure would have to be taken
into account too.
mainly it's about load rating and stiffness.
Just look at the max load for single tire..and the psi . a D tire
might be about 1,800 lbs max load single at 65 psi cold.
those are stiff tires,
much too stiff to run in the front IMO.
and never let the tire tell you what pressure to run. ( that max figure
is just that ..'max tire pressure measured cold.' )
Go by the tire sticker..
then by ride and handling - 'tune' the ride and handling compromise with
the tire pressures ....both 'how much' and especially by the difference
between front and rear tire pressures. More in back, always.
generally ..you will see in owners manuals ...high loads and higher
speeds ..use higher tire pressures.
On 1/21/2014 9:01 PM, Dennis Haynes wrote:
> The same tire size from different manufactures can vary quite a bit. In
> these sizes it is becoming rare for a manufacturer to offer the same tire
> model in both the load range "C" or "D". For those that do it is possible
> they are the same identical tire with a different stamp. Measure the
> sidewall thickness and weigh the tires?
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> James
> Sent: Monday, January 20, 2014 7:46 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Volksiebus - 88 Transporter - Tire sizes
>
> Would 185R14C 6PR and 185R14C 8PR be different diameters? Usually 185R14
> tires are all the same outside diameter, aren't they? I thought the 6PR and
> 8PR only referred to the internal construction.
>
> Not questioning your wisdom, just want to better understand tire placarding.
>
> James
> Ottawa, ON
> '91 2wd Vanagon Weekender Westfalia
>
>> Date: Mon, 20 Jan 2014 15:28:14 -0800
>> From: birdworks@GMAIL.COM
>> Subject: Re: Volksiebus - 88 Transporter - Rough Running Engine
>> To: vanagon@GERRY.VANAGON.COM
>>
>>> and if no one believes me about D's in the rear, C's in the
>>> front..look at a syncor tire pressure sticker sometime.
>>> says right on it ...rear 8PR, front 6PR.
>>>
>>>>
>> Actually it doesn't say that at all Scott - bad advice.
>>
>> Run what you want on a 2WD, but a Syncro's tires should obviously all
>> be identical if running a stock drive-train. Here's a photo of my
>> Syncro sticker -
>>
>> <
>> https://picasaweb.google.com/lh/photo/Cj48oPtaMjQ3hxDdKrMhLtMTjNZETYmy
>> PJy0liipFm0?feat=directlink
>> Notice on the first two lines there is no horizontal line between
>> 185R14C 6PR and 185R14C 8PR. This means they both use the same
>> front/rear pressures to the right. The horizontal line has a meaning.
>>
>> Using your logic I could use 205/70R1497R tires on the front. and
>> "reinforced" on the back (see sticker).
>>
>> I'm sure your Syncro customers don't run different tires front and
>> back - do they?
>>
>>
>> Angus
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