They're nicnnamed "Frito" 19.5's because they were commonly used on the aluminum-bodied step vans that Frito runs. They're the same 8x6.5 pattern that your existing 16" wheels are.
The problem you'll find is getting a tire "short" enough to run a 19.5 on a static dropped dually. The smallest tire is a 225/70/19.5 which is about 32" tall, a hair larger than a 235/85/16. So good luck with that.
Here they are on my old '98 C3500 wrecker, the tires shown are 245/70/19.5's which are about 33" tall. You've seen this truck already...
Don't confuse those wheels with the ones used on 3500HD's, which are 10 lug, not 8.
Richard
Post was last edited on Dec 27, 2011 01:38. Edited 1
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