17's or 18's on a 66 - Vintage Mustang Forums

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post #1 of 33 (permalink) Old 02-17-2017, 10:47 PM Thread Starter
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17's or 18's on a 66

The brake set up I decided to go with says that I may have to run 18's on my 66. Says some 17's may fit but may have to go 18. I have pretty well decided on Coy's C-67's machined wheels, but I'm wondering if they will even fit. They show 18x8 with 4 3/4 backspace and 18x9 with 5.5 backspace. Any insight?

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post #2 of 33 (permalink) Old 02-19-2017, 12:27 AM Thread Starter
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Anyone?

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post #3 of 33 (permalink) Old 02-19-2017, 06:43 AM
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Is this an all-out race car? If it's not there is no need for a brake that only fits inside an 18" wheel, that's massive over-kill.
It's your car so do what you like.
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post #4 of 33 (permalink) Old 02-19-2017, 10:56 AM
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Even if it is a all out race car, you still don't need that much brake for a less than 3000lb car. As stated though, it's your car.

Brakes

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post #5 of 33 (permalink) Old 02-19-2017, 11:13 AM
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It will be an all-out race car when he runs the rubber-band sidewalls
required with 18" rims.
Photo shows vintage B302 trans am front brakes on my cars. Only
15" rims required. With only standard brake pads, deceleration is
immediate & impressive..... like dragging an aircraft carrier anchor.

An 8" wide rim will fit, but requires around a 4.5" BS and PROBABLY
an aftermarket upper arm. (upper ball joint clearance needs some
scrutiny with the intended wheel choice)

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post #6 of 33 (permalink) Old 02-19-2017, 11:19 AM Thread Starter
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What I need to do is get a measurement on the 17" wheel I like. I really don't want to do 18's but I do like that wheel a lot. It's the Mustang Steve Bracket kit for the 2011-2014 mustang calipers and rotors. 13.2 rotors. I'm just quoting what is says in the instructions. Says some 17's will fit but may have to use an 18" rim. I looked on here and a couple of other forums and I know guys are running 17's with those brakes. Just a matter of if I can go with that particular wheel or need to change it up.

Troy Arave

Last edited by carguytroy; 02-19-2017 at 11:28 AM.
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post #7 of 33 (permalink) Old 04-09-2017, 09:36 PM Thread Starter
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Apparently Coys isn't making that wheel anymore. Bummer. Have to find something else I guess. I do like the good old Torq Thrust wheels and they would probably look good with the Litium Gray color I've decided to paint the car in. I've read that the Torq Thrust M will fit but not the TTII. I like the Torq Thrust originals the best, but not sure if they will clear the caliper without spacers. I don't want to use spacers.

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post #8 of 33 (permalink) Old 04-13-2017, 10:52 PM
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Torq thrusts? Noooooooo! Best part of your description.... good "OLD"
That's why I went with the cobra setup... it's a 12.99" rotor and the caliper just sits inside the wheel. I'm using 17"

I don't think 18's will fit well up front. In the back sure but if you're lowering the car, ......nope


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post #9 of 33 (permalink) Old 04-19-2017, 10:01 AM
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18 are too big imo..
I have 17 x8 front .. 9 rear
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post #10 of 33 (permalink) Old 04-19-2017, 10:23 AM
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Foonebooth- What wheels and tires are you running and the backspacing? Also any issues with rubbing?
Thanks
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post #11 of 33 (permalink) Old 04-20-2017, 01:32 AM
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Coys c67.. they only have one offset..

If I ever get around to ordering my real Wheels they a will be
a half an inch wider on the rear
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post #12 of 33 (permalink) Old 04-20-2017, 01:34 AM
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My car is far from stock these will not fit a stock 65 .. all the work I've done is in that rather lame CarDomain site lol
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post #13 of 33 (permalink) Old 04-20-2017, 08:00 AM
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Quote:
Originally Posted by fonebooth View Post
My car is far from stock these will not fit a stock 65 .. all the work I've done is in that rather lame CarDomain site lol
The 17x8's will fit easy on a stock 65, even a low one. Not sure about the 9's, but I reckon they would fit mine on the rear(pretty low, rolled guards only)
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post #14 of 33 (permalink) Old 04-20-2017, 08:22 AM
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I wouldn't go that far- I had 17x8 on the front of my stock '65 and they rubbed pretty hard- 235/45r17 tires (if I recall correctly) on the wheels Coy's said were a direct fit. I dropped back to a 17-7 with the same tire and they work perfect.

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post #15 of 33 (permalink) Old 04-20-2017, 08:39 AM
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Quote:
Originally Posted by GT289 View Post
It will be an all-out race car when he runs the rubber-band sidewalls
required with 18" rims.
Photo shows vintage B302 trans am front brakes on my cars. Only
15" rims required. With only standard brake pads, deceleration is
immediate & impressive..... like dragging an aircraft carrier anchor.

An 8" wide rim will fit, but requires around a 4.5" BS and PROBABLY
an aftermarket upper arm. (upper ball joint clearance needs some
scrutiny with the intended wheel choice)

ex-Global West GM
1991-1995
He's right. 4.5" backspacing will need a 1" spacer in the front to clear the ball joints with a 17x8" wheel. You might be OK with an 18" if it clears the joints (its pretty close with a 17") but you definitely need to roll the fenders and the wheel is gonna be tucked back under the fender a ways. In the back you'll need a 1" spacer if you're using a stock 8" rear end with an 8" wheel. You might be able to get away with doing the "poor man's minitub" with a 1" spacer if you're using an 18x9 with 4.5" BS.

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