Tires

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Sep 8, 2007 | 01:35 AM

quickspec

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Joined: 05-23-06

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From: Louisiana

Tires

How much do 225/40-18 tires throw your speedo off by?

Sep 8, 2007 | 02:00 AM

idunn

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Joined: 05-20-06

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From: Home: Holland, MI Stationed: Minot AFB, ND

it shouldnt change

Sep 8, 2007 | 02:06 AM

InfinityzeN

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From: Harker Heights, TX

Very small, 1 to 2 mph. Thats actually within the allowable range that your speedo could be off stock. So depending on if your speedo is high or low stock, you might actually be closer to your true mph.

Sep 8, 2007 | 02:09 AM

Mike

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Joined: 11-15-06

Posts: 351

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From: Houston, TX

You can use this tire size calculator to find out. Just enter the sizes and calculate. Pretty nice tool.

http://www.powerdog.com/tiresize.cgi

Sep 8, 2007 | 02:20 AM

Deathscythe

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Joined: 07-28-06

Posts: 4,994

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From: Waldorf, MD

but why would it change when he's got an ss/sc and those figures are the same for the stock tires? There should be no difference at all.

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