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RedDevil · 02-23-2016, 06:16 AM

175/85/r15? Are you sure?
OEM should be 175/65/R15...

If you really are using 85's then your tires are 7 cm (almost 3 inch) taller than they should be, you'd get 10% more miles and speed than the car indicates.
Then you have already met your 40 mpg goal with room to spare!

Edit: Looking up the specs I see different tire sizes listed for the 2007 Fit model; some use 175/65/R14, some 175/65/R15 - which is an inch taller.
If yours is supposed to have the R14s your tires would be almost 4 inches tall...

Best to go by the manual...

02-23-2016, 06:16 AM	#2 (permalink)
RedDevil Master EcoWalker Join Date: Dec 2012 Location: Nieuwegein, the Netherlands Posts: 3,998 Red Devil - '11 Honda Insight Elegance Team Honda 90 day: 49.01 mpg (US) Thanks: 1,711 Thanked 2,245 Times in 1,454 Posts	175/85/r15? Are you sure? OEM should be 175/65/R15... If you really are using 85's then your tires are 7 cm (almost 3 inch) taller than they should be, you'd get 10% more miles and speed than the car indicates. Then you have already met your 40 mpg goal with room to spare! Edit: Looking up the specs I see different tire sizes listed for the 2007 Fit model; some use 175/65/R14, some 175/65/R15 - which is an inch taller. If yours is supposed to have the R14s your tires would be almost 4 inches tall... Best to go by the manual... __________________ 2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut. lifetime FE over 0.2 Gmeter or 0.13 Mmile. For confirmation go to people just like you. For education go to people unlike yourself. Last edited by RedDevil; 02-23-2016 at 06:22 AM..