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Sidewall size Question

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Old 08-04-2007, 10:07 AM
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Default Sidewall size Question

Why is it that my rear tires sidewall is smaller than my front tires sidewall?

Im currenty running my factory S-02's. Iwill be getting RE-01's soon though.
Old 08-04-2007, 03:16 PM
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Originally Posted by Cheese Steak Nazi,Aug 4 2007, 02:07 PM
Why is it that my rear tires sidewall is smaller than my front tires sidewall?

Im currenty running my factory S-02's. Iwill be getting RE-01's soon though.
Is your question based on observation or measurement?

In tire denomination (example: 215/40R17) the first number (215) is the tire width in milimetres. The second number is the height of the tire's sidewall expressed as a percentage of the first number (40% of 215 which is 86mm.

So, the sidewall height for a rear tire which has a 245/35R17 denomination is 35% of 245mm, which is 85.75mm. Almost identical front to rear sidewall.
Old 08-04-2007, 04:55 PM
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Based on observation I guess, The Front Sidewall is a 55 and the Rear sidewall is a 50. F: 205/55/16 R:225/50/16-Factory S-02's.

BUT.......After reading your explanation, i now understand that just because the sidewall numbers are different from front to rear doesn't actullay mean that the tire sizes are different, it may just LOOK that way


Thanks.
Old 08-04-2007, 06:46 PM
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Old 08-05-2007, 11:06 AM
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Originally Posted by PJCC,Aug 4 2007, 04:16 PM
Is your question based on observation or measurement?

In tire denomination (example: 215/40R17) the first number (215) is the tire width in milimetres. The second number is the height of the tire's sidewall expressed as a percentage of the first number (40% of 215 which is 86mm.

So, the sidewall height for a rear tire which has a 245/35R17 denomination is 35% of 245mm, which is 85.75mm. Almost identical front to rear sidewall.
oh wow..you serious? that number is a percentage? I thought it was mm also and was confused with the OP
Old 08-05-2007, 11:23 AM
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Originally Posted by B.Money,Aug 5 2007, 03:06 PM
oh wow..you serious? that number is a percentage? I thought it was mm also and was confused with the OP
Yes. Can you imagine tirewalls of less than 1.5 inch height? 35mm = 1.37 inches.
Old 08-06-2007, 07:07 AM
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http://www.tirerack.com/tires/tiretech/tec...e.jsp?techid=46
Old 08-06-2007, 09:32 AM
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Jim, thanks for that link, i now know a lot more about tires than i used to.

BTW I will be calling you today to order some tires.
Old 08-06-2007, 10:52 AM
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Originally Posted by PJCC,Aug 5 2007, 12:23 PM
Yes. Can you imagine tirewalls of less than 1.5 inch height? 35mm = 1.37 inches.
well never thought of it like that I suppose...
Old 08-06-2007, 11:16 AM
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Originally Posted by B.Money,Aug 6 2007, 02:52 PM
well never thought of it like that I suppose...
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