Author Topic: Tire Size Recommendation 66 Hertz  (Read 1539 times)

SHELB66

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Tire Size Recommendation 66 Hertz
« on: May 23, 2023, 06:11:34 PM »
I'm looking for a tire size recommendation for my '66 Hertz.  I'll be utilizing the correct 14" magnum wheels (3.375" backspacing) and the A-arms have been lowered 2".  What's currently on there now are factory Ford chrome magnums with P195/70R14 tires.  The overall width of the rims is 8" so I'm thinking these are probably 6" rims.  The backspacing is 4-1/4".  How much tire can I comfortably use without issue considering the wheel will be outwards almost an inch.  Thanks very much!

Craig R.
66 Hertz 6S1564
06 Hertz #446
64 Ranchero V8 4spd
02 Explorer Sport Trac

427hunter

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Re: Tire Size Recommendation 66 Hertz
« Reply #1 on: May 24, 2023, 01:06:49 PM »
I put repop firestone D70-14 on my gt350 (factory 10 spoke car) the blue streak 14/695 looks way to skinny. The D70's fit the wheel opening perfect.
« Last Edit: May 24, 2023, 01:56:22 PM by 427hunter »
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Bob Gaines

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Re: Tire Size Recommendation 66 Hertz
« Reply #2 on: May 24, 2023, 01:54:43 PM »
I put repop firestone D70-14 on my gt350 (factory 10 spoke car) the blue dot 14/695 looks way to skinny. The D70's fit the wheel opening perfect.
I think you meant blue streak.
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427hunter

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Re: Tire Size Recommendation 66 Hertz
« Reply #3 on: May 24, 2023, 02:03:51 PM »
I put repop firestone D70-14 on my gt350 (factory 10 spoke car) the blue dot 14/695 looks way to skinny. The D70's fit the wheel opening perfect.
I think you meant blue streak.

I was trying to cut and paste the tire listing to show the size - it's listed as blue dot / blue streak - it would not cut and paste, I fixed it.
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Don Johnston

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Re: Tire Size Recommendation 66 Hertz
« Reply #4 on: May 24, 2023, 03:09:10 PM »
What is the radial tire size for the D70x14? 8)

427hunter

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Re: Tire Size Recommendation 66 Hertz
« Reply #5 on: May 24, 2023, 05:24:34 PM »
What is the radial tire size for the D70x14? 8)

There is no metric conversion that is exact but here are the specs:

Width 6.21
Cross section 7.85
Outer diameter 25.32

I hate radials on restored classic cars. The bias ply tires today are soft rubber and stay black vs the recycled radial rubber that turns brown.
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427hunter

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Re: Tire Size Recommendation 66 Hertz
« Reply #6 on: May 24, 2023, 05:40:45 PM »
Here is a photo of how it looks.
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Brant

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Re: Tire Size Recommendation 66 Hertz
« Reply #7 on: May 25, 2023, 09:28:25 PM »
Assuming that you want to use a radial tire, you will probably want to use a 205/70 x 14.

I have been running that size on a '66 driver which I have driven over 10K in the past several years.

Honestly, I am considering going with a 215/70, but with the lowered front end on your car, you may experience some front fender interference with this size. It is about 1/2" taller than the 205/70.

Here is a picture, although keep in mind that my trunk is heavily loaded here, so the car is a bit lower in the rear in this particular image.




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SHELB66

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Re: Tire Size Recommendation 66 Hertz
« Reply #8 on: May 26, 2023, 12:03:58 AM »
Thanks, Brant!  That's exactly the size I was considering.  I think it's a very good choice with much less chance of any interference.  Thanks for the picture of your car.  Lookin' GREAT!

Craig R.
66 Hertz 6S1564
06 Hertz #446
64 Ranchero V8 4spd
02 Explorer Sport Trac

67 GT350

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Re: Tire Size Recommendation 66 Hertz
« Reply #9 on: May 26, 2023, 08:21:40 AM »
I have thee 215 size on my 66 with no REAL issues, (very slight rub while backing up tight turn) Stock height, A arms have NOT been done yet even though they were to be done....(Go figure). And my wheels are the crap repro magnums....

I was thinking these, worried about the size though, but at least they have a nice lettering and are a radial.

https://www.cokertire.com/tires/goodyear-polyglas-radial-rwl-fr70-14.html
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6s855

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Re: Tire Size Recommendation 66 Hertz
« Reply #10 on: May 26, 2023, 11:48:05 AM »
I have these tires on my 66.  They're tall tires.  Probably will rub with a shelby drop.

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Re: Tire Size Recommendation 66 Hertz
« Reply #11 on: May 26, 2023, 12:17:32 PM »
YeahI thought so, just one size down and they would have a winner (SALES$$$$) BUT NOOOOOOOOOOOOOOOO!!!!
My car will need the drop as it looks like it has AWD.
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deathsled

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Re: Tire Size Recommendation 66 Hertz
« Reply #12 on: May 26, 2023, 06:44:14 PM »
On mine are 205 60R 15 front and 215 60R 15 in rear.  No rubbing issues on front with the Shelby A arm drop included.
"Low she sits on five spoke wheels
Small block eight so live she feels
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Engine revving to disturb
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Re: Tire Size Recommendation 66 Hertz
« Reply #13 on: May 26, 2023, 07:50:08 PM »
On mine are 205 60R 15 front and 215 60R 15 in rear.  No rubbing issues on front with the Shelby A arm drop included.

How do you like the tires?

I have 14's on my 66
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deathsled

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Re: Tire Size Recommendation 66 Hertz
« Reply #14 on: May 26, 2023, 09:14:07 PM »
On mine are 205 60R 15 front and 215 60R 15 in rear.  No rubbing issues on front with the Shelby A arm drop included.

How do you like the tires?

I have 14's on my 66
Eh, the tires are Kumho and are a tad old.  I got them on the fast and cheap just to get the car on the road again. I will need a new set quite soon. Not sure what would look best on 15 x 7 torques.
« Last Edit: May 26, 2023, 10:10:18 PM by deathsled »
"Low she sits on five spoke wheels
Small block eight so live she feels
There she's parked beside the curb
Engine revving to disturb
She's the princess from his past
Red paint gold stripes damned she's fast"