Renault Forums :: Independent Renault forum - View Single Post - 17" alloys ruin fuel consumption???

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post #4 of (permalink) Old 29th March 2009
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The 17" alloys can affect mpg, if you have the incorrect tyre size you could increase the engine rpm for any given speed / gear.

What was the standard tyre size and what are you running now?

If the standard was 195/65 R15 then you need 205/50 R17 or 195/50 R17 to keep the gearing the same.
this is good to compare
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