[DeTomaso] Tires for track days

[John Taphorn]

OK Asa, here you go.

Although, let me start with a warning.  Regardless of the width of the tire, 
if the rear suspension on a Pantera is compressed far enough, the inside 
sidewall of the tire will scrape against the upper frame rail.  As the wheel 
gets wider or the tire is moved inboard, that contact will occur with less 
suspension compression.  In view of this, you want to optimize the front 
spacing on the wheel to the outside fender lip to minimize the backspace. 
As I mentioned before, for aesthetic purposes, I still want to keep the tire 
from protruding outside the fender, or actually, body line of the car.

In light of the cost of new wheels and recognizing that our cars are each a 
little different, I would encourage a purchaser to measure his own 
dimensions rather than rely on the measurements of another's.  For example, 
my yellow car has extended upper A-Arms and modified wheelhouse and it's 
wheel measurements are less than ideal for another car that I am working on 
at this time that strikes me as being stock without visible repairs or 
modifications.  As Chuck Engles pointed out to me - if you are not careful, 
you simply end up with an expensive set of boat anchors.

The measurements for the rear wheels on the more standard car is  5.5"FS and 
6.0 BS seat to seat for an 11.5" wheel.  This wheel is measured seat to 
seat.  Measured from the outside lips would be 12.5"

JT

----- Original Message ----- 
From: "Asa Jay Laughton" <asajay at asajay.com>
To: <detomaso at realbig.com>
Sent: Monday, May 17, 2010 11:16 PM
Subject: Re: [DeTomaso] Tires for track days


> okay... but then -I- have to jump in (as I'm always easily confused) and
> ask...
> What size rims with what offset/backspace so you clear everything?
>
> Asa Jay
> (I know.... pop open the can of worms again)
>
> Asa Jay Laughton, MSgt, USAFR, Retired
> &  Shelley Marie
> Spokane, WA
> ******************************
> http://www.racingagainstautism.com
> http://www.teampanteraracing.com
>
>
> On 5/17/2010 20:57, John Taphorn wrote:
>> Let me clear the record.  I am in the wider the better on a Pantera as 
>> long
>> as they stay inside the fender line.  I am running 335/30/18s on a narrow
>> body and 345s on the GT5.
>>
>> JT
>>
>>
>> ----- Original Message -----
>> From:<wkooiman at earthlink.net>
>> To:<michael at michaelshortt.com>; "John 
>> Taphorn"<jtaphorn at kingwoodcable.com>
>> Cc:<asajay at asajay.com>; "De Tomaso List"<detomaso at realbig.com>
>> Sent: Monday, May 17, 2010 10:53 PM
>> Subject: Re: [DeTomaso] Tires for track days
>>
>>
>>
>>> I agree with J.T.  On a narrow body, you don't need as much meat to
>>> impress.
>>>
>>> The next set of tires I buy will most likely be 315-35-17's.  I like the
>>> 335-35-17's, but they are just a little bit too wide.  They don't rub or
>>> anything, but methinks 315's would look better.
>>>
>>>
>>> -----Original Message-----
>>>
>>>> From: "michael at michaelshortt.com"<michaelsavga at gmail.com>
>>>> Sent: May 17, 2010 10:33 PM
>>>> To: John Taphorn<jtaphorn at kingwoodcable.com>
>>>> Cc: asajay at asajay.com, De Tomaso List<detomaso at realbig.com>
>>>> Subject: Re: [DeTomaso] Tires for track days
>>>>
>>>> Thanks Jon,
>>>>
>>>> That's why I asked, LOVE mine 335/17/35 on 17 x 11
>>>>
>>>> Looks amazing and always a comment from others about all the "meat" on 
>>>> the
>>>> ground
>>>> it helps to have the beef to back them up.
>>>>
>>>> Michael Shortt
>>>>
>>>>
>>>>
>>>> On Mon, May 17, 2010 at 11:20 PM, John Taphorn
>>>> <jtaphorn at kingwoodcable.com>wrote:
>>>>
>>>>
>>>>> Mark says, "Unfortunately 335's are a bit too wide..."
>>>>>
>>>>> Perhaps aesthetically in your opinion, but not physically on a narrow
>>>>> bodied
>>>>> car.  Mine and many others have them.
>>>>>
>>>>> JT
>>>>>
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>>>>
>>>> -- 
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Michael L. Shortt
>>>> Savannah, Georgia
>>>> www.michaelshortt.com
>>>> michael at michaelshortt.com
>>>> 912-232-9390
>>>>
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