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Old 09-05-2011, 11:52 PM   #1 (permalink)
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Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Hi,
I bought a 66 Falcon with a 302 v8 a 4 Speed Toploader an hopefully the orignal 2,88 final drive rear axle.
I am going to buy new Tires, therefore i was wondering what the original Tyre size (transfered to today´s measurements) would be.
I found on a webpape that 195/70 14 should have the sam diameter as the original Tyres is that correct?
greats Peter
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Old 09-07-2011, 06:48 AM   #2 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Well the 302 is not factory. Is the 4speed factory? Was the car an original V8 or I6? If not then I bet the rear was swapped. It may have a different rear end so your axle width would be different than stock. A common rear axle swap is 70's era V8 Ford Maverick which is more stout than a Falcon rear, also its narrower which will allow wider tires.

I would suggest measuring tire clearances on your ride right now,(outside tire to inner fender lip)(inner tire to nearest obstruction) , determine your current rim offset. And you can use an online tire calculator to determine what would fit in comparison to what is on the car now. Here is one such calculator. Tire Height Calculator - Wallace Racing

You can do alot with aftermarket rims and get different offsets to allow wider tires.
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Old 09-07-2011, 11:56 AM   #3 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Small V8 Falcons came with 8 inch. In 1966 and later the Falcons grew wider and sized like the Fairlane, thus the Maverick is not a good substitute. The strength of rears is in the centers and axles for the 8 inch not the housing.

You could probably go to one of the online tire stores and find the original size for your car. That size you posted sounds correct. P205/75R14's were on my car when I got it but, they were not the original size I'm sure.
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"Tell it like it is or don't tell it at all" 1964 Falcon 2dr HT, 347V8 4V, dual exhaust, 5sp, pwr assist R&P steering, AM radio, heater with defrost and 2sp fan, electric windshield wipers, cigar lighter, dlx light group, bucket seats, console and full carpet.
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Old 09-07-2011, 12:10 PM   #4 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Mine is a 1st gen so Narrow is good.. The Falcon is about as narrow as you can get.

I forgot 66 is heading into the full figured falcons.. I will shut up now..

Last edited by okura_hubby; 09-07-2011 at 12:21 PM.
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Old 09-08-2011, 12:05 AM   #5 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Original it was a Club Coupe with bench seat Straight six 170 cui and 3 speed Auto,actual axle should be a 8in. There where 15" xx/295 in the back and 15" xx/195 on the front i don't think i should refer to that sizes so i have 2 14x6 Steel wheels and i will try to find 2 more.Whould still Be nice to know the original tire size.
Greats Peter
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Old 09-08-2011, 04:16 AM   #6 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Quote:
Originally Posted by okura_hubby View Post
Mine is a 1st gen so Narrow is good.. The Falcon is about as narrow as you can get.

I forgot 66 is heading into the full figured falcons.. I will shut up now..
Please don't. We need your expertise.
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Old 09-12-2011, 10:11 PM   #7 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Quote:
Originally Posted by Piet007 View Post
Original it was a Club Coupe with bench seat Straight six 170 cui and 3 speed Auto,actual axle should be a 8in. There where 15" xx/295 in the back and 15" xx/195 on the front i don't think i should refer to that sizes so i have 2 14x6 Steel wheels and i will try to find 2 more.Whould still Be nice to know the original tire size.
Greats Peter
6.95-14, on a 14x5 wheel IIRC. Roughly equivalent to a present-day 185-14, I think, if you could even find one.

Of course, by modern standards that's a ridiculously tiny tire and patently inadequate to contain the motor you've got in there, sensible only if you're really trying to maintain originality but it sounds like your car is somewhat past that. Does it have five-lug wheels at both ends? What's it got for front brakes?

I cannot imagine how anyone got 295-whatever rear tires on that car without surgery, I think you'd need to narrow a bunch of stuff in back (or chop out the fenders) to make that fit.

The fenderwells are relatively roomy on those cars, the steering won't much like anything over a 225/55-16 or 235/45-17 in front unless you're running a modern power steering arrangement (not Ford's original linkage-boosted garbage) and you might need to do a little fender-lip massaging, the rears will accommodate a 255/40-17 with ~1in wheel offset (e.g. Fox Mustang 17x9 wheels) if you roll the lips.

The Maverick/early Mustang rearend is 2in narrower and would allow use of a 255/40-17 or so with a low-offset wheel, but the spring pads are in the wrong place on the axle (2in further apart on the late Falcon/Fairlane.)

Last edited by JEM; 09-12-2011 at 10:21 PM.
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Old 09-15-2011, 08:01 PM   #8 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

hi,
thank you for your answer.
on the Front i have vented Disc Brakes, maybe from a Granada. Unfortunately i can not put 14" wheels over the Front Brakes. It seams to me that the 9" rear ist out of a pre 65 car, because it did not had self adjusters.
I have 5 Lug all around, but unfortunately the Bolt Pattern is 5 on 5 stud on the Front and 4,5 on 5 in the rear. Therefore i bought 15" steel wheels for the rear. I have 6x15 on front and 7x15 on the rear axle. I will use 205/65 R15 Tires i guess. That should not look to modern. I will have to pass a inspection in germany and that´s why it should not look too custom.
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Old 09-15-2011, 09:52 PM   #9 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

Quote:
Originally Posted by Piet007 View Post
hi,
thank you for your answer.
on the Front i have vented Disc Brakes, maybe from a Granada. Unfortunately i can not put 14" wheels over the Front Brakes.
Granadas all had 14in wheels, though for a 14in wheel to clear any Ford discs of that vintage the wheels have to have the correct rear profile, the original '66 wheels will not fit.
Quote:
Originally Posted by Piet007 View Post
It seams to me that the 9" rear ist out of a pre 65 car, because it did not had self adjusters.
It was common to remove the self-adjusters because they often did not take up evenly. My parents bought what is now my '64 Country Sedan new in 1964, it had self-adjusters from the factory but they were thrown away within a couple years.
Quote:
Originally Posted by Piet007 View Post
I have 5 Lug all around, but unfortunately the Bolt Pattern is 5 on 5 stud on the Front and 4,5 on 5 in the rear. Therefore i bought 15" steel wheels for the rear. I have 6x15 on front and 7x15 on the rear axle. I will use 205/65 R15 Tires i guess. That should not look to modern. I will have to pass a inspection in germany and that´s why it should not look too custom.
You mean 5" bolt circle on the front wheel studs? The only way that could happen with Ford parts is if someone managed to put a big-car ('60s Lincoln or '70s big Ford/Mercury/Lincoln) spindle and hub setup on it. That would be very odd indeed. Can you provide a picture of that front spindle/brake setup?
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Old 09-16-2011, 09:40 AM   #10 (permalink)
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Re: Original Tyre Size on 1966 2 Door ? recommended Tire sizes today?

hi,
yes i mean 5" bolt circle on front.
the only Picture that i currently have:

a will make better ones.
even the 15" steel Wheels do not have much clearance between Caliper and Wheel... it could be that somebody removed the self adjusters, but then he must also have changed the springs:

as you can se the Parking Brake Lever is missing, unfortunately i was not able yet to get a new one, the guys at NAPA told me that they can not order it...
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