The Stovebolt Site Forums The Shop Area General Truck Talk Tire size "conversion?"

I guess I'm "search term challenged." I'm trying to find a simple chart that tells me what metric tire size substitutes for the old nomenclature like 670/15 or 700/16. Help? Please? Shouldn't be that hard.

This will get you close on 15" and smaller.
http://www.tirerack.com/tires/tiretech/45_conversionchart.html

Yup. 15" and smaller. I guess I should have been more specific. I'm looking to fit tires to the stock wheels on my '55.1 3100 with 16" wheels. I can't find anything. Must be there somewhere.

Thsi is a little more work, but the oem tire specs can be found on many of the sites that sell reproduction tires, like Coker. Once you have the nominal diameter and width, you can compare them to the specs of pretty much any modern radial tire manufacturer and get a close match.
Since you are looking for tires for an AD body truck, though, the popular modern tire size that's pretty close and has the right look is the 215/85/16. It will work on the stock rim, even though it is a bit on the narrow side of the fitment spec. That size is pretty common for later model 1 ton dual wheel pickups, shouldn't be hard to find.

Try Barry's Tire Tech:
www.barrystiretech.com/vintagetireexchange.html

There's also a good site called "Vintage Car Connection"
www.vintagecarconnection.com/vintage_tire_size_conversion_chart.htm

I found a good excel sheet, but my notes don't tell me which site I found it on. One thing I learned from my research is that not all "old" sizes have been carried over. You will likely have to pick something that's close based on availability, or buy a specific antique tire (still available).

I opted for modern tubeless radials for a variety of reasons. Not the least of which is that it's one way to improve the performance of a 60 year old steering and suspension system.

Good luck and have fun.

A 700x16 has a 7.4" section width. which coverts to roughly 190 mm (eyeballing my ruler).