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Wheel Tire Package
#1
Ok, after a lot of inter-web surfing, researching and thinking, I've settled in on what wheels and tires I think I want on my '73.

Front:
P225/45/R18 on 18x7 alloy wheels with a 4" backspace
Overall tire dimensions 26" diameter, 8.9 tread width, 4" sidewall
Rear:
P255/45/R18 on 18x8 wheels with a 4.5" backspace
Overall tire dimensions 27" diameter, 10" tread width, 4.5" sidewall

I'm wanting about as much tire as I can reasonably fit and want the rears both larger and wider than the fronts, but proportional enough that it's not real obvious.

Ok, those of you who've been through shodding your ponies with bigger rubber, let me know if I'm About to make an expensive mistake.

Thanks, and fire away....
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#2
Sorry LC,

Can't help you there as i am a 15 inch rim dia guy only. Old school for me i guess.Undecided

Greg.Smile

whistling LORD, MR FORD - JERRY REED
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#3
L.C.Gray;241706 Wrote:Ok, after a lot of inter-web surfing, researching and thinking, I've settled in on what wheels and tires I think I want on my '73.

Front:
P225/45/R18 on 18x7 alloy wheels with a 4" backspace
Overall tire dimensions 26" diameter, 8.9 tread width, 4" sidewall
Rear:
P255/45/R18 on 18x8 wheels with a 4.5" backspace
Overall tire dimensions 27" diameter, 10" tread width, 4.5" sidewall

I'm wanting about as much tire as I can reasonably fit and want the rears both larger and wider than the fronts, but proportional enough that it's not real obvious.

Ok, those of you who've been through shodding your ponies with bigger rubber, let me know if I'm About to make an expensive mistake.

Thanks, and fire away....
I'm running 245/45/18, 18x8 frt.and 285/40/18, 18x9 rear. There is plenty of room to go larger in the rear. Overall tire dia is 27.1.

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
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#4
Can you please send pics of rear tires on car. Like to see what that looks like.

I'm in the same boat..have 245 / 18 in rears and want bigger..thinking 305

73429mach;241733 Wrote:
L.C.Gray;241706 Wrote:Ok, after a lot of inter-web surfing, researching and thinking, I've settled in on what wheels and tires I think I want on my '73.

Front:
P225/45/R18 on 18x7 alloy wheels with a 4" backspace
Overall tire dimensions 26" diameter, 8.9 tread width, 4" sidewall
Rear:
P255/45/R18 on 18x8 wheels with a 4.5" backspace
Overall tire dimensions 27" diameter, 10" tread width, 4.5" sidewall

I'm wanting about as much tire as I can reasonably fit and want the rears both larger and wider than the fronts, but proportional enough that it's not real obvious.

Ok, those of you who've been through shodding your ponies with bigger rubber, let me know if I'm About to make an expensive mistake.

Thanks, and fire away....
I'm running 245/45/18, 18x8 frt.and 285/40/18, 18x9 rear. There is plenty of room to go larger in the rear. Overall tire dia is 27.1.
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#5
Mine has 245/40/18 on 9x18 front and 285/40/18 on 10x18 rear.
The front is a compromise to allow the lowering.
With the standard blue one inch drop 620lbs coils up front I ran a 255/45/18 on the same 9 inch wide rims with no issues at all. After I cut one compete turn off the coils I had slight rubbing issues so I went with a smaller and narrower tire.
My tip would be to not go wider than a 8 inch rim up front but the with an 245/45/18 or even 245/50/18, depending on the ride height of your car.
Btw, at the rear I have room left to go wider than the 10 inch rim & 285 combo.

Important note: if the car sits at normal height it will look awkward with the 18 inch rims and the low sidewalls!!
That's one thing many people forget. Rims that big need to be tucked in so that you can't see the top of the tire.

[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
I have 2 sets of rear tires 255/45/17's and 315/35/17's (on 10 1/2's) Both clear everything fine without rolling the fender lip or anything visible being modified. I did use a hammer to caress a bit of the inner wheel well to make some room, but it was not really necessary.

Both of these tires are 26" tall. I previously ran some 28" tall 295-55-15's before I switched to disc brakes. As you get close to the limit, backspacing becomes pretty critical. It is important that your rear springs and shocks are in good shape. Slop in the bushings or shackles can allow the rear end to move side to side. Rolling the fender lips is worth while if you get within 1/2" of them when sitting still

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#7
You can see my 18" combo in my build thread-- post #90
http://www.7173mustangs.com/thread-green...460?page=9

LOVE OF BEAUTY IS TASTE..THE CREATION OF BEAUTY IS ART
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#8
            this is with 285/40/18, 18x9, 5.25 backspacing. There is alot of room left to go bigger with no rubbing.

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
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#9

.jpg   6mus.jpg (Size: 36.76 KB / Downloads: 192) 235-50 15 on 8 inch wheels, 275 rears with 9.5 inch wheels, good clearance all the way around.

   
Mexican;241786 Wrote:235-50 15 on 8 inch wheels, 275 rears with 9.5 inch wheels, good clearance all the way around.
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#10
Both those set ups look great, thanks for the pics.

My constraint at the moment is the wheel I've chosen only comes in 7" and 8" widths. I looked at going to a 265/40R18 rear tire but they're telling me I need a wider rim for that tire.

I do plan on dropping the car about an inch front and rear once I have the new tires on.
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