Fuel Mileage from Rims
Senior Member
Joined: Mar 2004
Posts: 108
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From: Aubrey, Texas
Tot the OP - don't ferget tire weights as well. E.g: (275/55/20) - OEM Scorps = 48 lbs; Michelin LTX M/S = 40 lbs; Cooper Zeon ATZ = 52 lbs. And most of this mass is at the outer periphery of the circumference - the worst possible place to add it - rotational inertia is increased, along with plain static unsprung weight. Double-whammy So - it's possible to weigh as much with a smaller rim and a heavier tire choice ...
Senior Member
Joined: Dec 2007
Posts: 213
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From: BC, Canada
I don't think I'd be doing a whole lot of changes for 1-1.5mpg gains. In the grand scheme of things how much are you really saving?
You'd save a whole lot more by just going easy on the skinny pedal.
You'd save a whole lot more by just going easy on the skinny pedal.
Thread Starter
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Member
Joined: Mar 2010
Posts: 31
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Nobody seems to know what the gain would be. The circumference of the wheel will be the same, but each wheel would be about 10 pounds per wheel lighter. From what i've seen the 18's are approximately 5 pounds lighter and the tire about another 5 or so.
I would believe w/out a doubt i'd see gains if i went w/ a narrower tire, but since the tire width and circuference is the same, i'm only shaving weight, and it's not worth trading rims for tenths of a mile per gallon.
