Tire size

[Jaymarr65]

Quick question will 295/50/15 on a 15x8 rallye wheel with 4.5 back spacing fit on a 1972 RR 8.75 rear end ???

 

[PurpleBeeper]

I don't think so. I know they're too big for a '70 Roadrunner & I "think" the '72 has a slightly smaller wheel well.

Now, you can always move the leaf springs into the frame rails, install mini-tubs & shorten the rear end.

 

[Tim Chavez]

Not sure about specific figment but An 11.5 inch wide tires is pushing the limit for an 8 inch wide rim in general

 

[multimopes]

I'm not sure of course but, I'm running N-50 x15 on 8.5" rims with a 3 1/2 " backspace on my 73 which I believe is the same size (rear) wheel well as the 71, 72 and 74 cars. The N-50 is approx. 11 3/4" wide. I measured the inside to outside of the factory wheel tub to be approx. 14". I have a narrower rear so my clearance is different but I will post a picture of a 29" x 12.50 tire on an 8.5 " rim on a friends 73 Satty. You can see they make it but it's tight. I'll throw in a rear picture of mine as well just for the heck of it. I have about an inch of clearance on the outside and more inside. I am actually closer to the spring than the inner well. Keep in mind that 295/50's are lower profile than my 26" N-50's as well. The offset and wheel width will decide how centered the tire will be. You could try a tool like Percy's wheel fitment tool to help you out with what fits.

 

[OH71RRunner]

Got 295/50 15s on an 8 inch wheel on mine. Spring relocation kit moved them in 2 or 3 inches.

I've also had 29x15.5 on the back as well. Those required a little extra pressure in the air shocks to keep from rubbing.

Don't remember what back spacing is on either wheel combo.

 

[T2R9]

If everything is in the stock location they will not fit. I ran 275-60-15's on the rear of mine with a 15x8, 4.5 backspace and had about 1/2" clearance inner and outer side.

 

[74gtx]

I have 295 50s on my 74 with 8” wheels with no problems. I can send pictures if you need

 

[Jaymarr65]

I have 295 50s on my 74 with 8” wheels with no problems. I can send pictures if you need

Yes could you send some pics. How much room do you have between the tire and leak spring ??

 

[MoparLeo]

What ever you do, please no air shocks.

 

[74gtx]

Sorry. I just saw your reply. I’ll try to get pictures and the space for you tonight or tomorrow. My car came with air shocks but it is fine without any air. I don’t fill them. Mike

 

[74gtx]

Sorry. I just saw your reply. I’ll try to get pictures and the space for you tonight or tomorrow. My car came with air shocks but it is fine without any air. I don’t fill them. Mike

 

[74gtx]

Sorry. I can’t tell if it worked. There is an inch between the wheel well and also an inch between the leaf spring. I gave one of the way the car sits so you can see there is no air in the shocks also

 

[Jaymarr65]

Do you know what the backspacing is ?

 

[74gtx]

I really don’t remember. I bought the wheels from summit. I’ll see if I can find anything on them. They were just a stock size they have

 

[74gtx]

Hi Jay. I’m fairly certain they have a 4 1/2” backspace.