[Ducati] Tire Pressures

[Brez]

>From my limited knowledge I believe once the tire is up to its operating 
temperatures it should be around 32 to 36 psi, depending on the tire.   As I 
understand it there a typical differential of about 4psi from cold temp to 
operating temp.  This is also why most run different pressures for the track 
and street.  On the street its difficult to heat and keep the heat in the 
tires.  The tire and bike manufactures have to take into account all riding 
scenarios.  The rear pressure are typically higher due to the possibility of 
carrying a passenger.

My 2 cents
Brez 02 998
07 Gixxer 750

----- Original Message ----- 
From: "mo+omille" <info at motomille.com>
To: "Ducati Owners Group" <ducati at ducati.net>
Sent: Friday, June 01, 2007 12:35 PM
Subject: Re: [Ducati] Tire Pressures


The manufacturers recommended is odd... some on the list can explain
why they spec these pressures.  Perhaps it's to meet a industry
standard for a rating... I'm not sure.  I do know there is a happy
zone for which most tires work the best.

I usually go 32 front and 29 rear.  Give or take 1psi depending on
the temps.   The 32 your tire guy is giving you seems right to me.
43 to me sounds a bit scary and unpredictable.

The harder the tire the less flex it will have giving it a
unpredictable feel.  I think you'll get better mileage on the highway
with a harder PSI.  But that's about it.

Pete


On Jun 1, 2007, at 5:09 AM, Matt Lane wrote:

> When I replaced the Pilor Power tires on my "Italian Bike" with  Conti 
> Sport
> Attacks (which are cheap and I am VERY happy the the handling...TBD on
> longevity) the place which installed them put them at 32psi fr/rr  like he
> does with every tire he ever mounts.
>
> I tried that for a couple hundred miles and liked the tires very  much. I
> also tried 33psi fr/rr according to the manual on my Pilots BTW.  Worked
> fine.
>
> But I also contacted Continental and asked them what pressures they
> recommend for me, my bike, and the new tires. After converting BAR  to PSI 
> (
> 14.7 to 1, yes?) I got about 37psi front and 43 rear on the road. Big
> difference but I just tried it for about 50 miles, including some very
> twisty sections. Not at all bad. Good, even. And I "assume" the higher
> pressures will result in greater longevity, among other things.
>
> Any thoughts/comments would be a fine thing.
>
> Ride Well,
>
> Gabriel
>
>
> Tire pressures are tricky. The bike manufacturers and tire  manufacturers 
> give different pressures as recomendations. I always  go with the bike 
> manufacturers recommendations for street riding. I  will adjust the 
> pressure for track days and run less PSI. Less PSI  in the tires means 
> more grip on the track. You do not need to worry  about that on the street 
> and will only wear the tire out in the  middle quicker. I do not know why 
> but Ducati recommends less tire  pressure front and rear than the other 
> bikes I own. Most of my  japanese bikes recommend 36 PSI front and 38-42 
> PSI rear. So, I  would say to stick with bikes manufacturers suggested 
> pressures. If  anything run 2 or 3 PSI less not more.
>
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