Tire Height Calculator

87TTopGT

New Member

Dec 21, 2003

173

1

0

Sep 10, 2004

#1

• Sep 10, 2004

• #1

I was trying to figure impact of treadwidth and aspect ratio on tire height when I was buying my DR's, and came up with this-

ftp://mcsuper@www.cox-internet.com/Mustang tire size calculator.xls

Could anyone let me know if this is accurate, or were my assumptions wrong?

 

T

TheUser

Active Member

Jul 25, 2003

1,859

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Springfield, MO

Sep 10, 2004

#2

• Sep 10, 2004

• #2

the link was bad, but you can figure tire height by adding sidewall to rim size...for example 235/50/R15's would be 235*.5=117.5mm (the .5 is because the middle number-50-is the percentage of the first number, or section width, and .5 is 50%). There are 25.4mm in an inch so 117.5/25.4=4.63 on each side, so 4.63*2=9.26+15(rim size)=24.26 inch tide height...cool?

 

87TTopGT

New Member

Dec 21, 2003

173

1

0

Sep 10, 2004

#3

• Sep 10, 2004

• #3

Yeah, that is what I used- weird about the link, it opened for me.

 

super302

I'd do anything for free Bapples

May 29, 2004

2,878

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Davenport, IA

Sep 10, 2004

#4

• Sep 10, 2004

• #4

what 'theuser' said....

 

JTGT

New Member

Jul 25, 2004

12

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0

On The Move

Sep 11, 2004

#5

• Sep 11, 2004

• #5

You can go to this link and save yourself all the calculations.

http://www.miata.net/garage/tirecalc.html

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Sep 11, 2004

#6

• Sep 11, 2004

• #6

it is not difficult (aspect ratio is the height and is a percentage of the tire width).

do note that different tires can vary quite a bit. the lower the profile, the less sidewall bulge there is, and this affects the physical measurements. try hitting a tire shop with a ruler - i bet you find that tires of the same numeric size measure out differently.

Yount knows a ton about this stuff (his bro is in the tire business). listen to him (i bet he posts in the morning). good luck.

 

stangracer79

Founding Member

Oct 3, 2001

226

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0

grande prairie alberta canada

Sep 11, 2004

#7

• Sep 11, 2004

• #7

I know a tire height calcuator a tape measurer.

 

87TTopGT

New Member

Dec 21, 2003

173

1

0

Sep 11, 2004

#8

• Sep 11, 2004

• #8

JTGT said:

You can go to this link and save yourself all the calculations.

http://www.miata.net/garage/tirecalc.html

Click to expand...

Good one! Bookmarking that puppy!