Wheels, Tires & Brakes Forum Where else do you go for wheel, tire and brake information?

bunch of wheel questions....

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Old 12-29-02, 11:48 PM
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ryanSC300lover
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Default bunch of wheel questions....

well i want to thank you in advance for your help

so i finally found a set of 17 inch supra tt wheels for my sc 300
the wheels have no front tires but comes with back tire..but my friend will give me 2 brand new tires from his bmw

here are my questions:

1) will 225/40/17s fit the supra front wheels which are stock 235 width usually...they are 17 X 7

2)the supra rears come with 275/40/17s..will 275 width fit my lexus sc300 that has a stock suspension?

3)is running wheels without center caps a bad thing for the car?

-ryan
Old 12-30-02, 12:13 AM
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pcmw
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Ryan,

#1) 225's will fit, but are too small. Invest in some wider tires.

#2) 275's will fit fine in the rear

#3) Center caps are just for looks and to cover the lug nuts.

MW
Old 12-30-02, 12:18 AM
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ryanSC300lover
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well the stock sc300 has 215s, and the supra wheels would have 235s...i was gonna put 225s, because they are brand new

waht would your recommendation be?

btw thanks for the help
Old 12-30-02, 12:46 AM
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pcmw
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Ryan,

You need to read up on plus sizing tires.

To go from a 215/60-15 stock tire to a 225/40-17 tire you will drop almost 1.25" in overall diameter. This will cause some issues...one being...

Foundation Speedometer Reading 65mph Adjusted Speedometer Reading 67.89mph

MW

Last edited by pcmw; 12-30-02 at 12:47 AM.
Old 12-30-02, 01:39 AM
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ryanSC300lover
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oh i see

sorry..i am not too educated about this stuff...where can i read up on it? and what would the tire recommendations be, ?
Old 12-30-02, 01:41 AM
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pcmw
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www.tirerack.com
www.yokohamatire.com

or just search the web for plus sizing or aspect ratio

Good luck.

MW
Old 12-30-02, 01:51 AM
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thanks man

sorry for the dumb *** questions
Old 12-30-02, 02:48 AM
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Din
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the stock tires that came with my sc 300 with 225s
Old 12-30-02, 02:51 AM
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ryanSC300lover
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mine is a 92
Old 12-30-02, 02:08 PM
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squarehat
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The best tool I've seen for comparing overall diameters for plus-sizing setups is here at: http://www.miata.net/garage/tirecalc.html
You can do a comparison on two tires that will give you revs per mile, outside diameter, and speedometer error, as well as a visual comparison of the two sizes. Or, there's a tool that will let you enter a bunch of sizes, separated by commas, and return a neat little table to compare things.
Old 12-30-02, 11:47 PM
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thanks square hat..that was perfect
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