Re: {Chrysler 300} 300 G

[EM-ATC-2021 <millserat@xxxxxxxxxxxxx>]

300C thru 300F show 9.00-14 OE - (28.7 to 29.0 Overall Diameter - varied by manufacturer)

And it is correct there is nothing close to that size - the biggest production size is P215/75R14 (26.7 in OD replaced 8.00-14) but even the P235/75R14 that shows as a direct replacement for the 9.00-14 was closer to 28.0 OD. Those were (are still?) made in American Classic, but these are not really production level tires - they were (are?) made in small batches and probably have a lot more hand labor compared to current production radials made in sufficiently large quantities to justify automation and computerized build equipment resulting in tighter tolerances and superior quality control.

As for the H, I believe that was 7.60-15 (the non letter 1962 was 8.00-14?). There you are in luck. In 1962, the auto industry changed to "Beautyline" (narrow - roughly 1 inch wide separated by a black strip between rim and whitewall) whitewalls and the 7.60-15 (Again 28.7 - 29.0 inch OD) translates to a P225/75R15 (28.3 in OD) or a P235/75R15 (28.6 - 28.9 in OD) both of which are available in a nearly correct production grade narrow whitewall. As of last time I checked there were 4 reasonably good quality and reasonably priced options: Hankook H724, Nexen N-Priz AH5, Toyo Extensa AS (all at 28.9 spec OD) and Cooper Trendsetter SE (28.65 in OD) as well as some lesser Chinese options - but grab one of these quick - and buy a spare as I think the whitewalls are on their way out. And if you want to go Diamondback, there are even more blackwall options to start with.

    As an interesting (or maybe not so interesting aside) the 9.00-14
    was replaced by the 8.85-14 which was replaced by the J78-14 which
    was replaced by the P235/75R14. Each progressive size became
    slightly lower profile as was the trend back then - and when radials
    came in, they sit slightly lower for the same Overall Diameter due
    to their construction. If I recall correctly, the 9.00-14 were
    designed as an 83% Height to Width ratio, while the 8.85-14 were
    80%, the J78-14 were 78% and the P235/75R14 are 75% (the Wide Tread
    / Wide Oval / etc J70-14 were 70%)

On 3/10/2021 11:59 AM, 'mark love' via Chrysler 300 Club International wrote:

I’ve thought about Diamondbacks but, unless I can’t read the chart, they don’t have a 14” rim (on the F (8/14) and H (7.6/14) that’s tall enough for what I need.  Any comments?  I do need to change the H tires soon.  G was 15”.  I can’t seem to find a 14” with a modestly wider profile that is tall enough to match the spec on the 14”.  So I’ve been a bit stuck with the Coker brand when considiering radials.

m

On Mar 10, 2021, at 9:24 AM, Hank Hallowell <hank@xxxxxxxxxxxxxxxxxxx> wrote:

I could not agree MORE. I just removed a set of Cokers and replaced them with Diamond Back Auburn series tires which made an incredible difference and used (interestingly) about 1/4 the amount of wheel weights to BALANCE - here I thought it was the rims. NOPE! So that to me says it all!!!!

You may pay more but you get what you pay for - sometimes 

The Cokers now serve as cushion between the wall and my car. 

Sent from my iPad

On Mar 10, 2021, at 9:52 AM, pffkllc via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:



Maybe 10-15 years ago I bought a set of Cokers for my G.  Three of the five disassembled while on the road 

over the first two years of use - less than 100 miles.  Coker refused to do anything about it, and that was the 

end of my Coker dealings.  I understand that they later acknowledged a problem with the 15" tires but that 

was a couple of years after my experience.  

Pete Fitch  

-----Original Message-----
From: Ron Waters <ronbo97@xxxxxxxxxxx>
To: 'leslie miklas' <ldmiklas@xxxxxxxxxxx>; chrysler-300-club-international@xxxxxxxxxxxxxxxx
Sent: Wed, Mar 10, 2021 8:26 am
Subject: RE: {Chrysler 300} 300 G

For a number of years, I've heard from many people that Coker branded radial
tires were junk. Hard to balance. Failures after a few thousand miles due to
belt separation. Other problems. Coker does sell a line of tires called
American Classics which are very good. I have them on two of my cars and
have been very happy with them. You may be able to get American Classics
from other distributors as well.

Ron

-----Original Message-----
From: chrysler-300-club-international@xxxxxxxxxxxxxxxx
[mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] On Behalf Of
leslie miklas
Sent: Wednesday, March 10, 2021 12:46 AM
To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: Re: {Chrysler 300} 300 G

> I purchased 5 new 235/75 radials from Coker for my 300C. After
installation, the car was "all over the road" as you described. It was
unmanageable.
> I pretty much knew it was the tires because the car drove fine before
installation. I took the car to my local tire dealer and he did a run-out
test on their balancer. The tires were all out of round.
>
> To be fair, Coker took the tires back, paid shipping both ways and sent me
a good set. My problem solved !
>
> My tire guy recommended next time ordering Coker tires thru a local
dealer.
> A lot of hassle could be eliminated and not for really much more $ if any.
>
>
> JM
>
> > On 03/09/2021 4:39 PM David <dnlook@xxxxxxxxxxx> wrote:
> >
> > 
> > Hi  As a new member and owner of a 300 I have many questions. First
> > I hope I am doing this right?  I have a steering problem in that I
> > can't hardly control the car as it's all over the road. New Coker
> > radials.  Where do I start figuring out the problem?  Dave
> > Nussdorfer
> >
> > Sent from my iPad
> >
> > --
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