['68OrangeSunshine]

My '68 C/10 Stepside was originally optioned with 17.5 - 6 lug rims. Fleet truck. Listed on SPID. [17.5 x 5.25 rims.] It used 7.00x17.5 tires. I had to go to 8.00x17.5 tires in Mid-'70s when the 7.00 became unavailable. In the '80s I went to 8R-17.5LT radials.
At the end of the 20th Century, the tire shop told me my factory 17.5 rims were shot. [After only ~300,000 miles!] So they set me up on 6x16 rims, White Spokes, with 235/85/16 tires. This year I need a spare rim. I searched high and low, but no one had that size rim in 6-5.5 bolt circle. It turned out I had been sold Trailer Rims. I looked for a 6x16 -6 lug trailer rim and quickly found one for under $70. Even though it's a trailer rim, they've proven themselves in over 20 years, so I'm not worried abot it.