tire size conversion

[caper150]

Anyone know how to convert tire sizes, my car has G78-15's on it, thats how long it's been since it's been driven, Actualkly the plates say 1967 but who knows for sure. Anyway anyone know what this size converts to in metric and what would be a good upsize in either a 17 or 18.

[caper150]

BUELLER...BUELLER... nobody, did I finally ask a question on here thats too tough for someone here to answer. :lol:

[awr68]

G78-15 = P215/75R15 or P225/70R15 = 27.4" diam

Google is our friend!! check here (http://www.vintagecarconnection.com/vintage_tire_size_conversion_chart.htm) for more info.....

225/60/17 = 27.6" diam.

225/55/18 = 27.8" diam.

235/50/18 = 27.3" diam.

[caper150]

Google, whats this google I keep hearing about :lol: I knew someone would come up with the answer. Honestly I just never thought about google, I do have a tire converter saved to my favorites it just won't convert the old standard size to the metric.Thanks Anthony


Darryl