7:00-18 was popular back then, been hard to find tires for years. Rims should be safe if not rusted & done by someone who knows what to do. These shouldn't the Firestone rh 5 window makers. Post a picture of the wheel.
BC 1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc 1949 GMC 250 project in waiting 1960 C60 pasture art Retired GM dealer tech. 1980 - 2022
My 1959 3800 (1 ton) with dual rear wheels had 18" sectional wheels with an oddball removable bead ring. It was a full circle ring with two relieved areas that could be pried up over the main wheel piece and slipped off sideways after the tire was deflated and the bead driven down with a duckbill tire hammer. The rings were very susceptible to rust damage and had to be inspected carefully and wire-brushed at each tire change. The locking lip was extremely narrow. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
You might want to read this Tech Tip dealing with wheels. Even though it primarily concerns wheels and tires for earlier trucks than yours, it does explain the difference between 2-piece and 3-piece wheels.
Most tire places that deal mostly with cars won't do a multi-piece wheel anymore and will tell you they are "dangerous" when the real reason is that they probably don't have anyone with any experience with them anymore. Most big truck tire centers and farm machinery service centers will still handle a multi piece wheel.
As said above, please take some detail pictures of your wheels. Do they look like either of these? The first picture is the 2-piece center split RH-5 that actually *is* a dangerous wheel. The 3-piece wheel, on the other hand, is generally safe as long as it is handled adequately and isn't rusted.
~ John
"We are not now that strength which in old days Moved earth and heaven; that which we are, we are"
1948 International Farmall Super A 1949 Chevrolet 3804 In the Legacy Gallery | In the Gallery Forum 1973 IH 1310 Dump 2001 International/AmTran RE3000 "Skoolie" 2014 Ford E-350 4x4 (Quigley)