I found this kind of interesting. The stock 1955 tire was a 6.70-15 that was 27 inches tall. With todays measurement it would be equal to a 170/90-15 that would also be 27 tall.
This link shows some other modern equivalents. From the side profile the car would resemble the original look, even with 18's if you squint a little.
https://www.automobile-catalog.com/t...n_265_v-8.html