 Tire size and gas mileage |
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| Ctrout |
 Feb 28 2005, 08:13 PM
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#1
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Member  Group: Members Posts: 377 Joined: 20-May 04 From: Mountain Home, ID. Member No.: 2,091  |
What does the common practice of going to a smaller tire size do to the overall gas mileage? I'm considering going to the original stock size tires for comfort (I don't race and may possibly increase my commute from 30 miles to over 100 mileas a day, round trip) and was wondering if I'll get noticeably better or worse mileage. If worse, I certainly won't bother.
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| r_towle |
Feb 28 2005, 08:23 PM
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#2
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Larger diameter tire = better mpg.
Think about it....if your tire is say 12inch circum. now and your new tire is 24 inch circum., you will double the distance that you go for every rotation of the drive axle/tranny/engine... This would apply for highway driving more than city driving... now in a hilly city SF for instance, there could be an arguement for smaller tires....if you need less torque/reving to get the car from a stopped position to moving and going up hill (smaller tire) than you might gain mpg.... So for highway i would say bigger tires... Rich |
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Posts in this topic
Ctrout Tire size and gas mileage Feb 28 2005, 08:13 PM
redshift Oh yes, moving back to stock will make you some ni... Feb 28 2005, 08:30 PM Ctrout
[/QUOTE]
I don't feel like I know you well e... Feb 28 2005, 08:39 PM MattR Wait. Now if you're driving on the surface st... Feb 28 2005, 08:42 PM redshift http://www.914world.com/bbs2/... Feb 28 2005, 08:44 PM Porsche Rescue I am doing the same with my car. I have found that... Feb 28 2005, 09:26 PM Ctrout My current commute is about 10 miles "city" 20 mil... Feb 28 2005, 09:32 PM Porsche Rescue If you have some room between the tire and the fen... Feb 28 2005, 09:43 PM Ctrout Tires I have now are nearly new. Probably not wor... Feb 28 2005, 09:53 PM
nebreitling what kind of mileage are you getting now? hopefu... Feb 28 2005, 10:27 PM |
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