The Trailblazers have a 6 on 5 lug pattern, not 6 on 5.5 like most GM trucks. Why GM did this who knows. Back in '05 when I was looking for wheels for my wifes Trailblazer I found out that there weren't alot of wheels out there for the t/blazer lug pattern. I don't know of any other truck or suv that uses this lug pattern. If you want to see my wifes t/blazer look at her album at mrs.silveradotrailblazer. There 20"X9" Helo's with 275/45-20 Bridgestones.
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