Gear/Tire Ratio for MPGs

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Jan 13, 2011 | 07:33 PM

#16

82shovel

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Joined: Apr 2006

Posts: 58

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From: Tucson, AZ

Do you guys know what the stock size tires would have been on an '89 d250?

Jan 13, 2011 | 07:50 PM

#17

Bencie

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Joined: Mar 2010

Posts: 298

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From: Somerset PA

235/85/16

Jan 14, 2011 | 12:45 AM

#18

schamran

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Joined: Nov 2007

Posts: 2,081

Likes: 3

From: Wisconsin

you also must figure how your speedo will change when you get taller tires. It's tough to know. Personally I would try to go figure out exactly how many rpm you wanna drop before deciding.

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