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INFO: The Official Tire Size Thread

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ilyes View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ilyes Quote  Post ReplyReply Direct Link To This Post Posted: 09-August-2019 at 10:35AM
275-40-17 on 17x9, 30et front and rear with 2" spacer rear, 1.5 front

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Post Options Post Options   Thanks (0) Thanks(0)   Quote hellride Quote  Post ReplyReply Direct Link To This Post Posted: 11-February-2021 at 10:07PM
I’m building my future 1972 GTS in my head and though I know what rims and rear tires to get but I struggle with the front.

Planned wheels as follows:

REAR: Cragar S/S 15”x10”, 5 3/4” spacing - 295/50-15 tire

FRONT: Cragar S/S 15”x8” (or 7”),  4,1/4” spacing - ?

Please help!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rtgreen Quote  Post ReplyReply Direct Link To This Post Posted: 15-September-2021 at 5:01AM
Posting for reference,2012 Mustang 19" Performance Pack wheels on the back of the Torino. I'm using these wheels just to move my Torino around in the garage. There is about a 1/4 of clearance between the wheel and frame rail. This would not be a great choice for a daily.




72 Gran Torino Sport Q 4spd in Light Pewter Metallic

2012 Mustang GT (Brembo) 5.0, 6MT, 3.55s

1995 Bronco - 5.0 5spd.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Krafthaus Quote  Post ReplyReply Direct Link To This Post Posted: 19-March-2022 at 1:41AM
You have pictures of your set up?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Eliteman76 Quote  Post ReplyReply Direct Link To This Post Posted: 19-March-2022 at 5:28AM
Originally posted by Krafthaus Krafthaus wrote:

You have pictures of your set up?

Which member are you asking about?
Andrew:GTS.ORG admin, '72 Q code 5 speed Restomod
Pondering: #99Problems
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Olin Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2023 at 3:36AM
1972 gran torino wagon.  Need a recommendation for rim width and offset for the rear.  Going with 15's. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DirtyHarry Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2023 at 4:23AM
Cop rims off Chrysler/Dodge/Plymouth 1970’s and 80’s are 15x7 fit perfect. I added cop bullet hole hubcaps and Mickey Thompson Sportsman 225/70-15 from Summit Racing
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DirtyHarry Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2023 at 4:25AM



Edited by DirtyHarry - 19-January-2023 at 4:30AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72 RS 351 Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2023 at 1:16PM
Originally posted by Olin Olin wrote:

1972 gran torino wagon.  Need a recommendation for rim width and offset for the rear.  Going with 15's. 


All of the Gran Torino models share the same rear wheel wells, and suspension parts. So anything others have installed onto their 1972-79 models, should work for you too.
Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W
73 Ranchero GT 351C-4V &4R70W for sale later.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rtfd406 Quote  Post ReplyReply Direct Link To This Post Posted: 23-April-2023 at 4:17AM
Any issues with the 255/60/15 tires rubbing on the front?

Rtfd406
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Eliteman76 Quote  Post ReplyReply Direct Link To This Post Posted: 23-April-2023 at 5:18AM
No, realistically with a 255, you'll be fine. I have fit 295/50R15, 255/50R17 on the front with no issues on stock suspension. Main thing, with a 255/60R15, stick with an 8" wheel. 7.5" wide might be ok, but look at the tire specs to make sure.

Andrew:GTS.ORG admin, '72 Q code 5 speed Restomod
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Eliteman76 Quote  Post ReplyReply Direct Link To This Post Posted: 23-April-2023 at 5:38AM
Originally posted by Olin Olin wrote:

1972 gran torino wagon.  Need a recommendation for rim width and offset for the rear.  Going with 15's. 

My personal preference for a long time was 255/60R15 front and 295/50R15 rear. 
Another popular size is the 275/60R15 for rear duty.

Main thing, look at your tire specs. Make sure you are getting a decently rated load capacity when picking tires.

Our cars are not 2900 pound fox bodies, so you want a tire with a decent rating.

https://coopertire.com/en-us/find-tires/all-tires/cobra-radial-g-t

Cooper has really kept the old 15" tire segment alive.
Surprised to even see 14" tires still offered.

Tire Size Service Description 
UTQG Load Range 
Approved Rim Width 
Measured Rim Width 
Max Load 



P235/60R 15 98T 440 A B STD RWL 6.5 - 8.5 7 1642
P245/60R 15 100T 440 A B STD RWL 7 - 8.5 7 1753
P255/60R 15 102T 440 A B STD RWL 7 - 9 7.5 1885
P275/60R 15 107T 440 A B STD RWL 7.5 - 9.5 2149
P295/50R 15 105S 440 A C STD RWL 8 - 10 2061

With the specs on the Cooper, the 255/60's would be a good choice for the front end.

275's will give some rake, 295's are shorter, and will give that nice steamroller look.

If you run a 8" mopar 15x8 wheel like we used to back in the day, you can fit 295/50r15's on all four corners and no rubbing concerns. I have also run Aero Racing 15" wheels that are wide...I mean WIDE wheels and they really fill the well but were over 11" wide.

Fun fact...BFG had a 305/50R15 radial that was used on Pantera cars and they also fit on our cars.

 
Andrew:GTS.ORG admin, '72 Q code 5 speed Restomod
Pondering: #99Problems
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rtfd406 Quote  Post ReplyReply Direct Link To This Post Posted: 23-April-2023 at 11:13AM
Would be going with BFG Radial TA 255/60-15 on Magnum 500 7 inch rims with 4.25" backspacing on the front and 275/60-15 on Magnum 500 8 inch rims with 4.5" backspacing on the rear.

Rtfd406
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Post Options Post Options   Thanks (0) Thanks(0)   Quote spriegel Quote  Post ReplyReply Direct Link To This Post Posted: 29-April-2023 at 3:03AM
1973 Ford Gran Torino

P225-70R-15  (All)
Bolt pattern: 5 x 4.5
Rim Size:  15x7
Back-spacing:  4.25"
 
Brand: 
a)  Rims:  Magnum 500 (Wheel Vintiques)
b)  Tires:  Cooper Cobra Radial G/T SL (Tire Rack)

-Chris




Chris
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'1973 Ford Gran Torino
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hogfiddles Quote  Post ReplyReply Direct Link To This Post Posted: 29-April-2023 at 5:08AM
I like mags, or keystone classics, or torque thrust rims. 

Those look great, Chris!

I’m not a fan of kidney bean rims.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GregSmith Quote  Post ReplyReply Direct Link To This Post Posted: 31-May-2023 at 6:52AM
Originally posted by spriegel spriegel wrote:

1973 Ford Gran Torino

P225-70R-15  (All)
Bolt pattern: 5 x 4.5
Rim Size:  15x7
Back-spacing:  4.25"
 
Brand: 
a)  Rims:  Magnum 500 (Wheel Vintiques)
b)  Tires:  Cooper Cobra Radial G/T SL (Tire Rack)

-Chris


Looking good. I may copy what you did for my LTD. What are the center caps? Thanks!
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Post Options Post Options   Thanks (1) Thanks(1)   Quote spriegel Quote  Post ReplyReply Direct Link To This Post Posted: 31-May-2023 at 11:09AM
Greg,

Thank you, I built a whole matrix of feedback from members on the forum, as well as put the Magnum 500's on with my Photo Shop software.

The center emblems are:

Supplier:  Kentucky Mustang
Item #:  14799
Description:  Wheel Cap Magnum 500 Ford Crest Metal Cap 2 1/8" Center 5/8" Tall

They have a separate web-site, but also list on their e-Bay store.  They are solid and good quality.

I've been very pleased with the rims/wheels/center emblem combination.

Thanks,
Chris


Chris
Fairview, PA
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GregSmith Quote  Post ReplyReply Direct Link To This Post Posted: 23-June-2023 at 6:04AM
Well, they ended up not working out for my LTD. In 72 Ford used giant calipers and these wheels won't clear them. They would with a spacer, but I really don't want to run spacers. So, about $300 in return shipping for everything, I'm back to the drawing board LOL

I'll buy one wheel at a time next try lol


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Neal Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2023 at 11:42AM
Went to a salvage yard to pull a wheel off an 88 Lincoln Town car. Took my Torino wheel to make sure the center bore and bolt pattern matched. It was Texas hot and I overlooked a small detail, it was a 15" wheel. Cry

So, still hunting for a spare wheel. Would this fit the 72 Gran Torino (disc brakes)"?
Rim  Diameter  14
Bolt Pattern 5x114.3
Offset  6
Backspacing  4.25 in
Rim Width  7

I have no idea what is stock offset and backspace,
https://tirewheelguide.com/sizes/ford/gran-torino/1972/


--Neal
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Neal Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2023 at 11:56AM
Originally posted by spriegel spriegel wrote:

1973 Ford Gran Torino

P225-70R-15  (All)
Bolt pattern: 5 x 4.5
Rim Size:  15x7
Back-spacing:  4.25"
 
Brand: 
a)  Rims:  Magnum 500 (Wheel Vintiques)



Chris, are yours these wheels?
https://www.summitracing.com/parts/wvi-54-5712044

They say center bore Center Bore Diameter (mm): 53.98mm
My 72 Torino hub is 69mm,  is that correct?

--Neal
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72 RS 351 Quote  Post ReplyReply Direct Link To This Post Posted: 03-October-2023 at 6:14AM
The center bore hasn't changed much in decades, but it is very close to 70.30mm as I recall.

The 90's Lincolns with 16" wheels would be 7" wide and similar in offset to the older Fords up to the late 90's(when wider wheels(8" or more) pushed the offset a bit more towards 30mm).
Don
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SunsetSeizin73 Quote  Post ReplyReply Direct Link To This Post Posted: 19-November-2023 at 4:34PM
Hey Everyone,

It's about time for me to do wheels n tires and wanted some input on backspacing and tire sizes....

I've always loved OleDutchD red 72's stance and wanted to do some thing similar. For my gold/brown 73...i think the Gray TTs would look great but needs to be the right fitment. Chrome would be rad...but it's seems a bit over the top for a "driver" status of my paint condition.  

Front 255/50-17 on 17x8    - There's 2 backspacing options  4.07in or 4.81? 

Rear I was hoping to go up to 295/45-18 on 18x10...backspacing 5.74 .....so expecting to run .75 spacer...on extended studs when I rebuild the 9in shortly. 

Couple questions: 

1. Front I think the 4.07 front backspacing would be better clearance...but what would ya'll do?
2. Rear - Are there real concerns around a smaller spacer, on extended studs to fix wheel fitment? 
-Rather than spacer...what if i went down to a 275/50/17 on 17x8 or 17x9.5 with better fitment? 

Notes: 393C build is in the works so a full heart transplant is in the works...trying to do all the prep work I can...and will start a build thread too.

Thanks in advance for your input!

Thanks,
Matt

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Moss Quote  Post ReplyReply Direct Link To This Post Posted: 31-January-2024 at 6:50AM
So, someone said 295/50/15 with 5 inch backspace. Never saw a picture. Can someone verify if will work with stock ride height? 70 torino
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Olin Quote  Post ReplyReply Direct Link To This Post Posted: 01-February-2024 at 1:25AM
I  have a 72 gt wagon. 295/70 r15 rear and 295/50 r15 front mounted on classic cragars with 5" offset. Looks great. Friend has 305's and I  am pretty sure I could have done same. Will try to figure out how to post a picture. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Olin Quote  Post ReplyReply Direct Link To This Post Posted: 01-February-2024 at 1:36AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72 RS 351 Quote  Post ReplyReply Direct Link To This Post Posted: 01-February-2024 at 4:05AM
Originally posted by SunsetSeizin73 SunsetSeizin73 wrote:

...

Front 255/50-17 on 17x8    - There's 2 backspacing options  4.07in or 4.81? 

Rear I was hoping to go up to 295/45-18 on 18x10...backspacing 5.74 .....so expecting to run .75 spacer...on extended studs when I rebuild the 9in shortly. 
...
1. Front I think the 4.07 front backspacing would be better clearance...but what would ya'll do?
2. Rear - Are there real concerns around a smaller spacer, on extended studs to fix wheel fitment? 
-Rather than spacer...what if i went down to a 275/50/17 on 17x8 or 17x9.5 with better fitment? 
...



Hi Matt, I'm planning to use that same Impala SS tire for the front of my 73. I have four 17x8" 98 Mustang GT wheels, the rear I'm shooting for the 275/50 tire. I think the 8" wheels need to be at least 4" back spaced, which is near zero offset.

I'd try that 4.81" back spacing wheel first, less might put it too far inboard. The rear has a little more space inboard, a wider wheel like 10" might need to be near the 5" back spacing.
Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W
73 Ranchero GT 351C-4V &4R70W for sale later.
92 Lincoln Mark VII SE GTC, OBDII 347/4R70W
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