[DeTomaso] Tire pressure

[Tomas Gunnarsson]

>From an engineering point of view I can't see how 2 vs 3 bar can make any
noticable difference in how much the center of the tread expands at speed.
What keeps the tire from balooning is the cords inside the tire, not how
much the sidewalls pull on the tread edges. Remember that the air pressure
on the tread section also increases when you raise the tire pressure. An
inflated inner tube shows you what happens when rubber and air are left on
their own to decide what shape to assume.

Tomas

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Thomas Tornblom
Sent: den 26 mars 2011 17:15
To: detomaso at realbig.com
Subject: Re: [DeTomaso] Tire pressure


The owners manual specifies 37 psi front and 40 psi rear for the GT5, or
2.6 and 2.8 bar, and this is what I run, and they wear even. I have
Yokohama AVS1 tires front and rear.

Two tire shops I've visited says that running these wide tires with too
low pressure will make them wear prematurely in the center from the
centrifugal forces.

Thomas

2011-03-26 16:23, Julian Kift skrev:
>
> I have to disgaree to part of that statement; 35 psi is the pressure 'per
square inch' so is independent of tire size. The issue is more likely that
the tire is too wide for the rim size creating bowing in the tread center at
35 psi which is now being compensated for by reduced pressure, two different
scenarios IMO.
>
> Julian
>
>> From: MikeLDrew at aol.com
>> Date: Sat, 26 Mar 2011 01:59:50 -0400
>> To: michaelsavga at gmail.com; pantdino at aol.com
>> CC: detomaso at realbig.com
>> Subject: Re: [DeTomaso] Tire pressure
>>
>>
>> In a message dated 3/22/11 19 32 49, michaelsavga at gmail.com writes:
>>
>>
>>> for some reason, my rears seem to wear out prematurely anyway.   I keep
>>> 335/35/17&  245/40/17. at 35 psi (cold).  Now that i have Kimbo, i
hoping
>>> for half the tread life and twice the fun.
>>>
>>
>> They probably wear out prematurely in the center, no? 35 psi cold is way
>> high for tires that big, in the rear anyway.
>>
>> Lori was running 32 psi in hers, and she developed premature wear in the
>> center on the rears. She recently dropped the rears to 28, but only has a
>> few miles on them since then.
>>
>> Mike
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Real life:   Thomas Törnblom             Email:	   thomas at hax.se
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