20" Wheel Club
#126
JK Enthusiast
Join Date: Nov 2010
Location: Birmingham, AL
Posts: 269
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So we all agree it is really about the proportion...need some sidewall to match the radius distance from center wheel to outer rim. There we have a compromise. If you can run 40's then 20's seem fine. If you are pushing 33s or so, 20s seem a bit ostentatious.