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Old 03-23-2010, 12:27 PM   #117
SCOTI
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Join Date: Apr 2001
Location: DALLAS,TX
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Re: Boss 338 Wheels **GROUP BUY**

Quote:
Originally Posted by brossow View Post
The good news is they're a direct bolt-on for your '00 GMC.
00 GM's are 6-lug.

Quote:
Measure your truck and compare it with the offset of these wheels. Pre-'70 will almost certainly require a spacer. '71-87 rear ends are 3/4" wider on each side (1.5" total) and may not need a spacer, or may only require a thin one rather than the full adapter-style spacer. Only you can determine for sure if you'll need a spacer.

Everyone needs to be clear: the wheels were retooled for a hub fitment issue, not a backspacing problem. If the backspacing was wrong for your application before, it'll be wrong for your application now. Some people used spacers in the past as a workaround for the fitment issue with the front hub, not because it was needed for backspacing.
I can't run more than 5.50"BS on my 74. Anything more & it will rub the inner wheel tub/mounting hardware.
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