Tire Size Recommendation 66 Hertz

[SHELB66]

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.

[427hunter]

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.

[Bob Gaines]

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.

[427hunter]

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.

[Don Johnston]

What is the radial tire size for the D70x14?

[427hunter]

What is the radial tire size for the D70x14?

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.

[427hunter]

Here is a photo of how it looks.

[Brant]

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.

[SHELB66]

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.

[67 GT350]

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

[6s855]

I have these tires on my 66.  They're tall tires.  Probably will rub with a shelby drop.

[67 GT350]

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.

[deathsled]

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.

[67 GT350]

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

[deathsled]

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.