I did not notice any increase or decrease in fuel economy. This is a VERY small change in the O.D. of the tire. If anything, I would have expected to see an increase in mileage since the O.D. is increasing.
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2013 Audi TT RS (Tech Pkg, Sport Exhaust, Heated Seats, Sirius)
Retired--2007 Z4 M Coupe (Imola Red/Black, Premium Pkg, Heated Seats, XM, Bimmian stubby antenna, CDV delete, Apex EC-7--Anthracite, Goodyear F1 Asymetric 2.
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