Date:         Sun, 8 Dec 2019 13:30:40 -0800
Reply-To:     Dan N <dn92610@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dan N <dn92610@GMAIL.COM>
Subject:      Re: Tire pressure recommendation... please
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <DM6PR10MB40595A722C6D1C8C49D89781A0590@DM6PR10MB4059.namprd10.prod.outlook.com>
Content-Type: text/plain; charset="UTF-8"

thanks a lot Dennis for the explanation..

the suspension was fully rebuilt about 500 miles ago, shocks are Bilstein
HD, tire are 215/65 LT R16 BFG AT KO2 - 103/100S, load range D, 8 ply...

dan

On Sun, Dec 8, 2019 at 1:09 PM Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> Yes, as tires get larger less air pressure is required for a given load at
> a given speed. The BFG is also a hard riding tire due to the particularly
> stiff sidewall.
>
> I am not familiar with the BFG "Baja" tire. Is this an XL or standard
> tire? This can make a difference for inflation pressure.
> Syncros also ride harder than 2WD especially in front, the coil spring is
> shorter and depending on shocks and other choices things can be drastically
> different. Shocks and the upper control arm bushings can fail in ways to
> actually bind and stop normal movement which can also effect ride.
> Unfortunately only way to test and confirm is disconnect the upper arm from
> the ball joint to check the bushings and remove the shock-spring assembly
> to test the shock.
>
> Getting back to the tire, if this is a standard load rated tire, 98 load
> index, it actually reaches full load capacity of 1,653 pound at 36 psi.
> Between 36 and 51 psi there is no increase in capacity. This range is for
> rolling resistance and handling.
>
> If this is an extra load tire, 102 index that tire reached full capacity
> at 42 psi.
>
> From experience running the 215/65-16 38 to 42 front and 42 to 48 rear
> seems to work and feel right. If still too harsh look for suspension
> issues.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Dan N
> Sent: Sunday, December 8, 2019 3:12 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Tire pressure recommendation... please
>
> hi all,
>
> one of my van (tintop Syncro) has BFG Baja 215/65R16.. what's the correct
> tire pressure for Front and Rear?
>
> let me explain... on my other van (tintop) I have General Grabber ATX
> 20x8.5 LT R14, I put 42psi/Front and 46psi/Rear and it's fine - but if do
> the same on the Syncro with 16" tires the ride is quite hard...
>
> as for reference on my SUV they recommend 32psi Front and Rear on
> 275/55R17...
>
> i am lost... it seems to me the larger/wider the tire the lower pressure
> is required...
>
> thanks for any help
>
> dan
>