Correct Size Tires for 15x7 Rallye Rims...

[72ls5fla]

Hello-
new to the forum and just purchased a real 70 440+6 Cuda.  It currently has Radial TA tires on it and I would like to get the roodyear Polyglass GT tires.

What are the correct size tires for the front and rear.  I do not believe the car has the "hemi" fenders.
Thanks in advance.

Bill

[Chryco Psycho]

F60 15 was the original size

[72ls5fla]

Thanks for the info....

Bill

[the_engineers]

What are "Hemi" fenders? Hear it often, but never thought to ask...

[Topcat]

What are "Hemi" fenders? Hear it often, but never thought to ask...

Inner fenders were rolled due to the extra front end weight.

Quite interesting.

http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=6249774&an=&page=&vc=1

http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Board=A12&Number=4980648

[Chryco Psycho]

Welcome Bill BTW
 C.P. / Neil

[CarelianCuda]

F60 15 was the original size

Only with Hemi, E60 x 15" for other 'Cudas (except rear of AAR)
http://www.hamtramck-historical.com/images/dealerships/SalesmansPocketGuides/1970/Pg%20036.jpg

[72ls5fla]

Thanks everyone for the valuable input.. 

How much of a real noticable height difference is there between "F" and "E" series?
If there difference is more width than height, I will purchase the "E" series.
I would rather the tire which fills the wheel-well up a better, without being grossly to large.

I will most likely have to get a new speedo gear once I find out just how far off the MPH's are.

In your opinion, who is the best Vendor to purchase restoration/aftermarket parts from?
Im more concerned with fit/finish/correctness than saving a couple bucks here and there.

Bill

[CarelianCuda]

How much of a real noticable height difference is there between "F" and "E" series?

Tire Size       Design         Section        Overall
Designation   Rim Width     Width          Diameter
E60-15          6.00            8.70            25.50    (340, 383, 440, 440-6 & AAR front)
F60-15          6.50            9.20            25.94    (Hemi)
G60-15          7.00            9.70            26.44    (AAR rear)

[challengermaniac]

Tire Size       Design         Section        Overall
Designation   Rim Width     Width          Diameter
E60-15          6.00            8.70            25.50    (340, 383, 440, 440-6 & AAR front)
F60-15          6.50            9.20            25.94    (Hemi)
G60-15          7.00            9.70            26.44    (AAR rear)

Are the AAR Front & Rear sizes same for the TA?

What would the modern day radial tire size equilvant be to the E60-15 and G60-15 tires?
 

[Cooter]

Are the AAR Front & Rear sizes same for the TA?

What would the modern day radial tire size equilvant be to the E60-15 and G60-15 tires?
 

The 235/60/14-15 Is about the same as the 'ol skool "G60"..
The 'ol skool "L60" is around a 275/60/14-15
The 'ol skool "N50" around a 295/50/14-15

However, today it would seem there are ALOT of oddball tire sizes available..I just bought two 245/60/15 which are wider than a 235, but narrower than a 275/60...
Then, there's the 305/50/15, the 325/50/15 and so on...

[the_engineers]

Quickie tire sizing info:
On a 235/60R15, 235 is the width in millimeters. 60 is the sidewall ratio...the sidewall height will be 60% of the width. The 15 is the rim diamter in inches. A 255 is roughly 10" wide at the sidewall. A 255/60R15 will be 10" wide with a 6" sidewall and will be roughly 27" tall.

Hope that helps.

[CarelianCuda]

Are the AAR Front & Rear sizes same for the TA?

What would the modern day radial tire size equilvant be to the E60-15 and G60-15 tires?

Yes, both same on AAR & T/A.
225/50R15 & 245/60R15 looks closest to same on radial tires, but i think at tread of old bias ply tires are wider anyway.
Radial tires also rolling a little lower than bias, so maybe the 235 & 255 is better?

With 15" Wheels - 60 series tires       
                                  Section        Overall       
Metric    Width         Aspect    Height        Diameter       
Width    (Inches)       Ratio     (Inches)      (Inches)     
195         7.7          60         4.6           24.2
205         8.1          60         4.8           24.7
215         8.5          60         5.1           25.2
225         8.9          60         5.3           25.6
235         9.3          60         5.6           26.1
245         9.6          60         5.8           26.6
255        10.0          60         6.0           27.0
265        10.4          60         6.3           27.5
275        10.8          60         6.5           28.0

Dimensions from: http://www.pontiacserver.com/tires.html

[challengermaniac]

What would the modern day radial tire size equilvant be to the E60-15 and G60-15 tires?
 

So if I understand correctly, the modern tire equilvent for a TA would be Front 235/60/15  and Rear 255/60/15, correct?

ps: Bill, sorry if I hijacked your thread.

[1970 RT Challenger 1970]