tirerack.com is an excellent site to look at aftermarket wheels and plus sized tires . Wheels alone have no effect on whether mileage or performance will change.The secret is The RPM of the tire (revolutions per mile). If you go to tirerack open any particular tire an then open the spec. column. At the far right you will see how many RPM each size rolls. It's important not to wander more than 20 less rpm (larger diameter tires) when you choose tires as it'll seriously effect your speedometer.
2007-10-06 10:06:38
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answer #1
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answered by Country Boy 7
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In theory you will get better freeway mileage because the engine will be turning at a lower RPM to maintain a set speed. However this is often not the case in real life because if the bigger wheels raise the car higher off the ground then you will have greater wind resistance. The air has to travel around the car body AND the tires. If you have more tire exposed then you are increasing your wind resistance. If you get bigger tires and lower the car to compensate it will improve mileage on the freeway. In the city it will take more power to get the car moving. The bottom of the wheels will be more flat and resist rolling and with a larger tire your gear ratio is effectively higher (numerically lower number). You will have to press the gas slightly harder to take off from a dead stop. So it can hurt your city gas mileage. Manufacturers usually offer several different gear ratios depending on the height of the tires sold with the car. Cars with taller tires have a lower ratio (numerically higher number).
2016-05-17 10:39:55
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answer #2
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answered by Anonymous
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Not only will it affect your gas mileage,your ride will be worse and your stopping distance will increase. It's not a smart move. There are plenty of 16 inch wheels that will work just fine. Bigger is not always better
2007-10-06 09:51:50
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answer #3
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answered by Anonymous
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The car can feel heavier with the bigger rims, and you will see an increase in gas consumption, but I don't think it will be more than 2-3 MPG.
I had 16's in my Passat, and when I installed 18's, my MPG dropped by 2.
YMMV.
2007-10-06 09:47:45
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answer #4
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answered by Anonymous
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it will effect your gas mileage if you do a lot of city driving plus it will throw your speedometer off and you will get a rougher ride out of the big wheels and tires.
2007-10-06 17:34:49
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answer #5
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answered by mister ss 7
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If you go from a 16" rim/tire to an 18" rim/tire, your speedometer will read "slow". By that I mean if your speedometer reads 65 mph, you will actually be going (approximately) 71 mph.
2007-10-06 20:35:45
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answer #6
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answered by Yeti 2
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Sure.
Sticking your finger in a light socket will hurt too.
2007-10-06 09:57:10
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answer #7
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answered by Mr. KnowItAll 7
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