1966 galaxie 16" vs 17" wheel and brake combo - Page 2 - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #16 of 48 (permalink) Old 06-12-2019, 03:56 AM
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Re: 1966 galaxie 16" vs 17" wheel and brake combo

I've just measured one of my rotors which came from a '71 Galaxie kit, and a spare rotor which came off my '70 Galaxie. They are 11 5/8" diameter.
The hub sizes are a fraction away from 70mm diameter.

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1972 Falcon XA GT.
1970 Galaxie 500 Sportsroof.
1963 1/2 Galaxie 500 Fastback.
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post #17 of 48 (permalink) Old 06-12-2019, 11:54 AM Thread Starter
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Dan, you rock! Thanks for measuring.
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post #18 of 48 (permalink) Old 06-12-2019, 01:17 PM
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Re: 1966 galaxie 16" vs 17" wheel and brake combo

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Originally Posted by lsugymrat24 View Post
289, Do you remember which size kit you got? 11.3 or 12.8 rotor? And hows it working for you?

just curious, does anyone know if Wilwood is a one off type product or is it a Ford aftermarket or is it like a Chevy aftermarket adapted to fit our Fords? In the end, it probably doesnt matter because I do have a Hotchkis suspension kit, edelbrock RPM intake and heads, and other nonstock items.

In the end, Im not really sure of the best way to go and Im sure they all have pros and cons
11.3 in the front but I'm running 15" wheels.


1967 Galaxie 500 Edelbrock Intake, Holley 600, Electronic Ignition, Wilwood 4-Wheel Disc Brake Conversion
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post #19 of 48 (permalink) Old 06-13-2019, 12:40 AM Thread Starter
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Based on what y’all are running, 11”+ rotors and 4 piston calipers should do fine (edit: I misread previous threads. The 71 conversion uses a single piston caliper). And now I have two viable solutions to make that work.

Now I have to decide on wheel and tire size. Guess now I’m considering three options for new wheels...
*stock style 15x8s. Maybe a chrome barrel with black insert and the original dog dish caps. From DANVs thread on his conversion, this would work with a 4” backspace. This would be a more comfy ride and I already have new 15” tires, but would it feel too bouncy and lead to understeer vs 16 and 17” wheels?
*16x8 drake mag 500. Will 4.5” backspace work with the discs? is this a good balance between the shock dampening of the 15s and the performance of the 17s? Maybe someone has experience and pics of something similar.
*17x8 drake mag 500. Will 4.75” backspace work with discs? is the performance worth the noise and rough ride? It’s a three hour drive to cruising the coast... Will this make me want to pull over and call a tow truck? Haha

Last edited by lsugymrat24; 06-14-2019 at 05:45 AM.
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post #20 of 48 (permalink) Old 06-13-2019, 05:30 PM
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Re: 1966 galaxie 16" vs 17" wheel and brake combo

If you are going to use 15" rims, then avoid the 4 piston calipers. The factory 4 piston calipers as used on the '66 and '67 Galaxies required different rims to clear the calipers, and probably one of the reasons why Ford then went to single piston calipers from 1968 in their Galaxies and other cars.

2003 Falcon BA XR8 Ute.
1972 Falcon XA GT.
1970 Galaxie 500 Sportsroof.
1963 1/2 Galaxie 500 Fastback.
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post #21 of 48 (permalink) Old 06-14-2019, 05:44 AM Thread Starter
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Now that you mention it, I didn’t remember reading it in your previous thread or in the article I provided so I assumed a multi piston setup. but now that I look at pictures, both threads do show single piston calipers.
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post #22 of 48 (permalink) Old 06-14-2019, 02:01 PM Thread Starter
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Finally got the behemoth out of the old garage. Front end is slightly higher than I wanted but it doesn’t look bad. After the front settles a bit it may be just right. Will take measurements for available room in the wheel wells tomorrow
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post #23 of 48 (permalink) Old 06-14-2019, 02:09 PM Thread Starter
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Couple more pics
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post #24 of 48 (permalink) Old 06-14-2019, 07:27 PM
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Hi ,here's some pics of my car .The Magnum 500 15 in where on the car when I hauled it home.. and then purchase a four-wheel disc brake kit from Auto Crafters which turned out to be a disaster Granada front spindles 1 piston calipers the car wouldn't stop very well at all..The Magnum 500 would not go on over the calipers either.. Since I'm decided to do a frame off restore to the car completely I went to Wilwood site and looked up what I wanted for the fornt and rear..then bought them form Summit racing. I went with the 4- piston 12.88 front rotors and I believe it's a 12in rear.. since I had to buy larger rims because of the first system I put on it the first time I have a 18.8 235x50x18 and the rears are 235x55x18. I'm having trouble posting the pics of my car before I took it apart.
I believe Jay Leno is responsible for Wilwood disc brake kits that fit the 66 Galaxie and the Hotchkis suspension which they set up for a 16 in rim here's the link to YouTube
https://youtu.be/V-BL7G5m98M
Hope I have use punctuation and capitalization and then all can understand this post.
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post #25 of 48 (permalink) Old 06-14-2019, 08:16 PM Thread Starter
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Ragtopxl, that’s a nifty looking brake kit and a sweet looking car. Thanks for sharing.

Your write up says you used the 4 piston kit but your pic of the frameoff restoration is the 6 piston kit. Can you confirm which one you used and give some info on how it performs?

I think both the 15s and 18s look really good on your car. How is the ride with the 18s — road noise, steering response, road feel, etc?

By the way, I have watched that jay leno video at least a dozen times over the last couple of years but I am about to watch it again. The Hotchkis production kit doesn’t quite match what they built custom for Leno but I am glad they released a kit to the public (I bought most of the kit and installed it last year). I forgot that he made the bracket on a cnc for the wilwood brakes. Thanks for reminding me!

Last edited by lsugymrat24; 06-14-2019 at 08:25 PM.
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post #26 of 48 (permalink) Old 06-15-2019, 06:13 AM
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Isugmral24 sorry .It is the 12.88 rotor and 6 piston caliper on the front kit #140-13654.The back Is the 12.19 rotor 4 piston caliper kit # 140-9282.. Install was for the most part simple and easy I did purchase there brake lines for the front. The car still isn't on the road so I can't tell you as to the performance of them yet. Still doing body work had to put quarters on it which is a bit difficult because the quarters I put on it or 53 years old also LOL... and do another body and bumper mods..
As far as the handling the 15's on the magnum 500's handled like I remember it did when I was 16 ( a boat). I had to redo the brakes on it because the power drum brakes or going bad. And the front-end bushings were shot no I rebuilt the front end put on an inch and 1/8 sway bar and this breaks. Which it like I said after putting on the 11 inch rotors with the big single-piston caliper the Magnums with no longer fit,,so I new rims ! I liked the look of the magnums,but real like the ones I got... after putting on the big sway bar changing all the bushings up front it was a very very noticeable difference in the handling I still had a little body roll in the corners,but a rear sway bar I believe will help that.Also the rear trailing arms bushings were worn I put the spohn adjustable tubular trailing arms on.Oh really did notice any more road noise with the 18's and I have enough sidewall still with the tires so the feel of the road isn't a factor...I understand that the low profile tires I'll give you more of a feel for the little things that you might hit or run over in the road... tire noise I believe the mostly in the brand and type of tired you put on.
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post #27 of 48 (permalink) Old 06-15-2019, 09:20 AM Thread Starter
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You make a good point about tire quality. The guy at my local shop suggested 225 Fuzion protouring tires for my wheels. I haven’t driven on the road yet but the tires look way too wide for the wheels and I notice a ton of sidewall flex even with 40 lbs of air pressure. If I stand on the front bumper and jump up and down, the suspension only flexes about a quarter to half inch while the tires flex so much they look like they’re about to bust. Almost like they can’t handle the weight of the car. I’ve never seen tires flex like this before.
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post #28 of 48 (permalink) Old 06-17-2019, 07:16 PM Thread Starter
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In the pics it looks like the top of the outer wheel wells are exactly even, but measuring inside the wells reveals a slight rake to the stance. There’s 9” above the rear tires and 7-1/2 inches above the front tires. I do wish the front end was slightly lower because looking at a front angle gives a slight gasser appearance

Yesterday I measured the tightest tolerances for the wheel diameter. In the back wheel well, There is 1-3/4” between the front of the tire and the outer wheel well. In the front wheel well, with the tire turned outward, there is 3-1/2” between the front of the tire and the outer wheel well. The tires are 25-2/3” so Based on these measurements I could go back up to 28” oem size tires. To get a more raked look, I may either cut another 1/4 coil in the front or put a 27” tire up front and a 28” tire in the back.

After doing some more reading, I’m leaning toward the 4piston wilwood kit that reuses the existing galaxie spindles. Seems like an easy retrofit. Thanks again for everyone’s input... it was very helpful.

I’m leaning toward the magnum 500s but still not sure about the 16x8 or 17x8 wheels. Seems like there’s more tire options for 16s than 15s and even more for 17” wheels these days.

Last edited by lsugymrat24; 06-18-2019 at 02:42 AM.
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post #29 of 48 (permalink) Old 06-25-2019, 12:44 PM Thread Starter
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Re: 1966 galaxie 16" vs 17" wheel and brake combo

one of my initial questions was about performance difference between 15 vs 16 vs 17 inch wheels (something I haven't settled for myself) on the 65 to 68 galaxies, but I'm now doing quite a bit of reading on what width and diameter wheels/tires will fit. sounds like I can use up to the following sizes...
front: maximum 8" wheel, 4.5" backspace, 235mm tire. height ratio depends on what has been done to the suspension. looks like quite a few folks are using 25.5" to 26.5" dia tires regardless of wheel dia.
rear: maximum 10" wheel, 5.0 or 5.5" backspace, 275mm tire. 28" dia if stock suspension height.

I know other folks can use the search function the same as I can, but thought it might help to group some of these articles together as quick reference for other folks...
https://www.fordmuscleforums.com/gal...l-options.html
https://www.fordmuscleforums.com/gal...what-fits.html
https://www.fordmuscleforums.com/gal...els-tires.html
https://www.fordmuscleforums.com/gal...heels-fit.html
https://www.fordmuscleforums.com/gal...r-hardtop.html
https://www.fordmuscleforums.com/gal...y-7-litre.html
https://www.fordmuscleforums.com/gal...5-galaxie.html
https://www.fordmuscleforums.com/gal...ds-wheels.html
https://www.fordmuscleforums.com/gal...-wheels-3.html
https://www.fordmuscleforums.com/gal...-5-wheels.html
https://www.fordmuscleforums.com/gal...onversion.html

Last edited by lsugymrat24; 06-25-2019 at 12:49 PM.
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post #30 of 48 (permalink) Old 06-26-2019, 05:57 AM Thread Starter
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Re: 1966 galaxie 16" vs 17" wheel and brake combo

thought it also may help to group pics of a few Gals with 15s, 16s, and 17s. Details are as per the postings in other threads...
  1. 1966 Galaxie 225-70r15x7 front, 275-60r15x8 rear, magnum 500s
  2. 1966 Galaxie 225-70r15x7 front and back, magnum 500s
  3. 1965 Galaxie 15x7 front, 15x8 back, fast fives (no tire size info provided)
  4. 1965 Galaxie 225-60r16x7 front and back, crown vic (this is the only pic of 16s on a Galaxie that I could find)
  5. 1965 Galaxie 225-50r17x8 front, 255-50r17x8 back, Cragars
  6. 1967 Galaxie 245-45r17 front, 275-40R17 rear, 2009 mustang bullitt (my guess is 8" wide wheels)
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Last edited by lsugymrat24; 07-11-2019 at 04:34 AM. Reason: found additional info in another thread
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