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Old 05-19-2010, 09:14 PM
CF Junior Member
Join Date: Oct 2007
Posts: 37
Default 18" vs 20" wheel question

This will no doubt sound like a stupid question so let the bashing begin. 2010 Sierra Z71 4WD with stock chrome 18's. Wanting to switch to stock machine finished 20's. First off, does anyone see a problem with running the 20's on a Z71 4WD. I see plenty of non-Z71's running them. Second, I noticed that the 20's are .5 inch wider than the 18's, does anyone know if I would need any spacers for this install?
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Old 05-19-2010, 11:50 PM
nj85z28's Avatar
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Join Date: Apr 2010
Location: Vernon, NJ
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I ran 20" tahoe wheels on my 05 4x4 Silverado for 3 years without any problems. No spacers
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2011 Camaro 1SS 6.2 V8 M6/Hurst


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Old 05-20-2010, 10:58 AM
country_09's Avatar
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Join Date: Jul 2009
Location: Highlands
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you can run 20s on that truck no problem just got to find the right tire
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Old 05-20-2010, 11:36 AM
ffmed6134's Avatar
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Join Date: Feb 2010
Location: Houston, texas
Posts: 78

Tires are more expensive, BFG makes one of the best all-terrains in my opinion, here is my reasoning. I would trade out the 18's for 17's and save some money
LT305/55R20 = $417
LT305/60R18 = $311
LT285/70R17 = $230
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