Re: [Chrysler300] 300 L wheels & tires

["Gary Barker" <gbarker@xxxxxxxxxxxx>]

 I have always put a small dap of Grease on the tire and then role the car 
at least one turn  of the wheel and then Measure the  distance between the 
grease spots.    Gary Barker

--------------------------------------------------
From: "Michael Reed" <mrreed@xxxxxxxxx>
Sent: Thursday, January 01, 2009 4:29 AM
To: "Edward Mills Antique Tractors" <millserat@xxxxxxxxxxxxx>; "300 Club 
Server" <Chrysler300@xxxxxxxxxxxxxxx>
Subject: Re: [Chrysler300] 300 L wheels & tires

> The Web site mentioned (Car / SUV / Van / Light Truck Tire Calculator) can 
> be very useful. I would like to caution readers, however, regarding the 
> "Wheel Circumference" value returned. The number is accurate, based on the 
> "Overall Wheel Diameter" provided, and is valid for a wheel/tire carrying 
> no weight and inflated. The page calculates the circumference 
> mathematically.
>
> However, mounted on a vehicle, unjacked, the tire has a "rolling 
> circumference" -- and it is not the same value as can be calculated. The 
> "flat" at the bottom, where the weight rests, creates a tire that is not 
> round. I don't believe the actual circumference of a tire can be 
> calculated accurately, as the "flat" on a tire with weight on it varies 
> according to a number of factors. Back in my racing days, we had to 
> physically measure the circumference using a tape measure to get an 
> accurate circumference value. Due to the larger 'flat' on today's radial 
> tires the difference between actual and calculated is even greater.
>
> As the "Wheel revolutions per mile" and "Wheel revolutions per second @ 
> 65MPH" are derived from the calculated circumference, those values are 
> inaccurate also.
>
> Mike Reed in flooded Lake Odessa, Michigan -- but the "F" is high and dry 
> across the street....
>
>  ----- Original Message ----- 
>  From: Edward Mills Antique Tractors
>  To: Larry Nirenberg
>  Cc: rselby41@xxxxxxxxx ; 300 Club Server
>  Sent: Wednesday, December 31, 2008 10:25 PM
>  Subject: Re: [Chrysler300] 300 L wheels & tires
>
>
>  Larry Nirenberg wrote:
>  >
>  > Before I guessed I would go to this web site and figure out an
>  > equivalent to the OEM radius tire in a 15" size. If you do this the
>  > tire will definitely fit-
>  >
>  > http://www.net-comber.com/tirecalc.html
>  > <http://www.net-comber.com/tirecalc.html>
>  >
>  > ________________________________
>  >
>  > From: Chrysler300@xxxxxxxxxxxxxxx
>  > <mailto:Chrysler300%40yahoogroups.com>
>  > [mailto:Chrysler300@xxxxxxxxxxxxxxx
>  > <mailto:Chrysler300%40yahoogroups.com>]
>  > On Behalf Of Roger Selby
>  > Sent: Tuesday, December 30, 2008 9:29 PM
>  > To: 300 Club Server
>  > Subject: [Chrysler300] 300 L wheels & tires
>  >
>  > Hi 300 Friends,
>  > I was driving my 300 L to the Sparks/Reno 300 Meet, last June, when a
>  > gal
>  > ran a RED light and took out my cars front end. A new clip, sub-frame &
>  > 6
>  > months later, it is out of the body shop. Arbogast Body & Paint, 
> Auburn,
>  > Ca. did a great job & are super people.
>  >
>  > I am now looking to put on Magnum 500 wheels 15X7 inch & 235/75/15
>  > tires.
>  > Will I have the clearance to run these larger, 15 inch tires?
>  >
>  > If anyone knows, please advise.
>  >
>  > Thank you, Roger Selby
>  > Placerville, Ca.
>  > 530-622-1020
>  >
>  > [Non-text portions of this message have been removed]
>  >
>  >
>  Diameter is only part of the problem - and don't for a minute believe
>  that all the same size tires are the same size. check the referenced
>  site for starters, but check vendor info on tire dimensions - especially
>  tread width. On several 235/75R15 I looked at there was more than an
>  inch difference in tread width - from 5.9 inches to 7.4 inches. If your
>  OE tire was 9.00-14 - BFG tread width was only 4.8 inches.
>
>  Don't know about your application and wheel offset will also be
>  important - but on a non-letter 67 300, the 7.25 inch tread width on
>  15x6 with 0.5 inch inboard offset, they rub at both front and rear
>  inboard edges at extremes of steering. Factory offset for the 67's was
>  0.25 inch inboard and I think the 15x7 are 0.25 inch inboard so they
>  should be better than 15x6 with 0.5 inch inboard, but rub was at static
>  condition - tires will deflect inboard a bit under hard cornering.
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
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>
>
> 

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