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Old 08-01-2009, 03:37 AM   #3 (permalink)
hypermiler01
93 Metro Streamliner
 
Join Date: Oct 2008
Location: Oregon
Posts: 180

AeroMetro - '93 Geo Metro
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No, smaller isn't better. 13 is the smallest practical size that you can get good passenger car tires for.

Smaller diameter tires will spin faster (more bearing friction) and handle bumps and potholes poorly.

I just got a set of 14 x 5.5 inch aluminum RX7 wheels for my Geo, running 175/65R14 tires.
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