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Tire / Wheel Combination
#1
Magnum 
It is time for new tires and wheels on my 73 Mach 1. I currently have the 14 inch forged aluminum wheels and will be changing to Magnum 500 wheels. After doing some research it looks like P/235-60-R15 tires will offer nearly the same diameter as the current F70-14 tires so speedometer accuracy impact will be minimal. I am struggling with wheel size - 15X7 or 15X8? I wish to have the same size tire front to back. I have read many articles from 71-73 owners indicating that 15x8 wheels are the way to go but I don't want any suspension interference. Does anyone have the 15x8 wheel size up front? This car will be an occasional driver only - no hard driving or racing.

Steve
73 Mach 1 Blue Glow/Argent Q Code C6 Auto
73 Mach 1 Blue Glow/Argent Q Code 4 Speed
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#2
With a 235/60/15 you would want the 15X7" wheel. An 8" wheel would be too wide for that tire.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#3
I had 15X8 magnums with 245/60/15 tires on the Mach 1 and they fit and looked perfect!

Regards Tom








I am just here to eat my lunch and screw stuff up!!!!!Haha
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#4
droptop73;24924 Wrote:With a 235/60/15 you would want the 15X7" wheel. An 8" wheel would be too wide for that tire.

Sorry Jeff, for once I don´t completely agree with you.

Whether that goes with a 235/60/15 is basically a matter of taste. Technically a 8 inch wide wheel fits a 235 tire perfectly, as 8 inch convert to 20,5 cm and the tread is 23,5 cm.
But if you want the tire to bulge on the side, the rim might be a little too wide. (I had 255/60/15 on a 7 inch wide rim, because I wanted that vintage race tire look)
However the deeper dish of the 15x8 will compensate for that and make the wheels look wide, even without a bulging tire.

You won´t have any issues with suspension travel or clearance with an 15x8 rim.
I´d personally go for an 15x8.

[Image: 1z21rv4.png]

Mike

"If I were you...... I´d rather be me."  Tongue

Check out my video:
http://www.7173mustangs.com/thread-my-mustang-in-action

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#5
Well I bugged a friend of mine for some pics of his Charger.
This one has the desired 15x8 with 235/60/15 tire combo up front. (The rear is a 15x10 with a 275/60/15)
As you can see the 15x8 looks great! (The rest of the car too by the way!)


Attached Files Thumbnail(s)
   

[Image: 1z21rv4.png]

Mike

"If I were you...... I´d rather be me."  Tongue

Check out my video:
http://www.7173mustangs.com/thread-my-mustang-in-action

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#6
That's OK Mike we can agree to disagree. My point of reference are the 235s on my car with the 7" rims. Also since he is going for a stock look and Ford never used an 8" Magnum I think it is his best choice. Mike it's OK... you can be wrong. Big Grin LOL

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#7
I'll agree with 351RamAir on this one. Mine are 8's and the fit and look very good. Somethings wrong with my tires though they seem to be losing tread in the back... lol


67 Diamond Blue Vert

[Image: images?q=tbn:ANd9GcRveIaRU6OAzTfd2Mv6ypG...mJJrHJ_B_Q]

DUDE

LOL even my sig line offended somebody!
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#8
I was looking for a vintage look too and the best i could get with my exitent 14" x 8" wheels was 225/75/14

It is a rare tyre choice but according to some measurements i did, was the most factory looking combo. The diameter is 1/8" bigger than the original choice (i actually found a website that informs all this details... i I remember correctly the diameter they said was for a 1971 351 BOSS)

Well... my wheels has the vintage look but i hace to say, they look pretty big too... In the front, they hide too much into the fenders... I have no clearance problem, even with fast turns, braking, but I have the car in his 128 cm, original ground to roof tall and it looks more agressive than it supposed to..

With 14" wheels, my guess is 235/70/14... The tire is actually 1,5 cm shorter and a little wider that looks better in the rear...

Here is an old pic but shows more or less, the looks of both rear and front ends... hope it helps!

   



Damián Cool

[Image: 120x45bk1ani.gif]
Vote For 7173Mustangs.Com Every Day!
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#9
droptop73;24964 Wrote:Mike it's OK... you can be wrong. Big Grin LOL

You remind me of my wife! Big Grin
I could agree with you but then we´d both be wrong! Tongue

With 8 inch wide rims, it will still look factory stock, only with a little twist to set it apart.

[Image: 1z21rv4.png]

Mike

"If I were you...... I´d rather be me."  Tongue

Check out my video:
http://www.7173mustangs.com/thread-my-mustang-in-action

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#10
Thanks for the help guys. I have decided on the 245-60-R15 tires on the 15x8 Magnum 500s. This combination will
look great against the blue glow paint and argent stripes. Can't wait to get this car back on the road. It has been
sitting in various garages since 1987 and has not logged a single mile since.
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