Vintage Thunderbird Club International

Alan H. Tast wrote:Circumference is the distance AROUND the outside of the tire;
Diameter is the distance ACROSS the tire.
A person could figure out diameter by going through a math formula, but I'm too lazy to do that right now.

28.29"

Alan H. Tast wrote:For my own curiosity, can you measure that tire to see what its overall diameter is? If I know that, I can figure out sidewall height since the rim should be 15" diameter to the tire's inner bead/mounting surface.

Should be 88.87" circumference, when new.

Original tire size for '67 was 8.15x15 for all models regardless if air conditioning was installed. In '68 this was updated for use of an optional 8.45x15 tire on Tudors without A/C; the 8.45x15 was standard on Tudors with A/C, and a 8.15x15 with an 8-ply rating was used on early '68s. These had an...

Thanks!

What is the closest size to "correct" with stock 15" wheels, in modern radial sizes? Or what successes have YOU had with different size 15" tires?
This is the Tudor Landau 428 car.

Thanks!

DIS is for DIScharge... It's a charging system failure warning light.