Not sure I understand the benefit of Hubcentric - in reality, most
wheels center on lugs which are further from center and hence better
able to resist any movement as long as they are concentric.
To be Hubcentric, you must have 2 things - first hub must have a
raised surface to register rim and second, rim ID must be precisely
correct diameter for that specific hub. Many drum brake applications
do not have a surface raised to register on. Further, many wheels
have slightly oversized and/or loose tolerance to accommodate
multiple applications - i.e. the ability to swap aftermarket wheels
for both Ford & Chrysler application.
We had option to use Hubcentric Momo wheels years back while racing
- you had an oversized center on wheel and used a set of application
specific adapters which precisely matched ID of wheel and OD of the
specific car. Never found any real benefit so we did not use after
first few uses. Principal benefit seemed to be precision in
centering with respect to any potential out-of-round of the mounted
assembly. No real benefit as to side loads which were the
predominant issue on race car as we never had any concentricity
issue with Momo or BBS wheels with race tires.
I would suspect this recommendation is due to some of the balance
issues which have been reported with some replica sizes and low
production specialty tires.
I would further note that belted tires (both radial and bias-belted)
are particularly sensitive to belt alignment and manufacturing
tolerances. In 1968/69 when bias belted tires became popular, only
Goodyear had them and in their haste to catch up, several of the
other big5 (Goodyear, Firestone, Goodrich, General, and Uniroyal)
had issues with their first generation tires. When customers
complained about balance, we were instructed to check with a radial
runout gage and if more than a number which I now forget, they were
replaced no charge. By about 1970, the production tolerance issues
were sorted out.
On 1/4/2014 8:07 PM, Ryan Hill wrote:
Hub centric uses the actual hub to center the wheel;
the hole in the center of the wheel fits snugly over the
hub. Lug centric wheels rely on the lugs only.
Sent from my iPhone
>American Classic Tires recommends "lug
centric" wheels rather than the original "hub
centric" wheels that may flex with radials.
Can you explain the difference ?
Ron
----- Original
Message -----
Sent:
Saturday, January 04, 2014 4:02 PM
Subject:
[Chrysler300] New American Classic Tires
Hi To All & Happy New
Year,
Just opened the latest Hemmings MN &
Coker is advertising a new series of
American Classic radial WWW tires that
have bias ply look profiles. The American
Classic Tire website does not show them as
of yet.
They seem to be geared for Cadillacs,
thunderbirds & Corvettes.
Based on carnut.com
"as built" specs for '55-'65 300s, C-300,
300-B & 300-G owners may benefit from
the 800:R15 tires if a 3 1/4" WWW works
for you.
As with American Classic 235/75R14 &
235/75R15 radial tires, the white wall is
an integral part of the tire. The 14" 75
series tires are for 1955-1960 unless
owners opt for 15" wheels and tires.
Diamond Classic has S rated new Michelin
235/75R15 tires that they will put what
ever size WW you want. They also promise
the 235/75R14" tires soon by their own
production.
BTW, I have the 15" Michelin tires from
Diamond Back mounted on Stockton 15"
wheels with the original 300-F hubcaps.
They are great and exceed all
expectations. One tire did develop "bead
bubbling" of the white wall where it
sealed to the rim. I had to pay shipping
one way for a replacement WW. They did
give me some grief since it they were over
1 year old.
American Classic Tires recommends "lug
centric" wheels rather than the original
"hub centric" wheels that may flex with
radials.
Stockton Wheel will make up 14" modern
"lug centric" replacement wheels or 15"
that will accept 14" hub caps for radial
tires. They are for 1957-60 and 1962-65.
Their 15" wheels do not match 1961 300-G
perforated wheels. They will not fit
1955-56.
Some narrow white walls are currently
still available for 300-H and up.
All of this comes at a price! Hope Santa
was good to you.
300,ly,
Tony Rinaldi
300-F Conv't
Sent from Yahoo Mail for iPhone |
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