What was the factory tire size? 66 Fury

[FuryRoadTrip]

Does anyone know what the original tire size probably was on our '66 Plymouth Sport Fury? We're wearing 225/70/R14's right now. I think the speedo is a bit slow. Thanks!

 

[69CoronetRT]

7.75 X 14 black walls were standard.

 

[FuryRoadTrip]

Thanks, 69CoronetRT. I'm getting an education. Since they were bias ply, is there a series like 78 that I should assume? Found these on Coker Tire:
https://www.cokertire.com/775-14-firestone-7-8-whitewall-tire.html

 

[commando1]

7.75 X 14 black walls were standard.

Do you know the next size up to that?

 

[FuryRoadTrip]

Thanks, 69CoronetRT. I'm getting an education, since they were bias ply. My last car with bias plys was a '70 Polara Wagon!

 

[polara66hardtop]

that 7.75 was 27 inches tall, which is why the speedo is off.

 

[Blue 300]

8.25x14 was an optional size back in the day.
The 225/70R14 is already a bit wider and very close to the same OD
21575R14 is about .3" larger in OD
this might help
http://www.paspeedo.com/calculator.htm

 

[polara66hardtop]

The 225/75-14 was a good fit, but the Powers that be saw fit to discontinue the size. I went to 15's just to get the correct height.

 

[69CoronetRT]

Do you know the next size up to that?

I'm not sure if there was a next size up for the Sport Fury....I'll keep looking.