Wheels and Tires Need help with wheels or tires? Got fitment issues? Have questions about tire performance and handling? Ask all of those questions here!

conversion table?

Thread Tools
 
Search this Thread
 
Old Oct 15, 2012 | 08:45 AM
  #1  
taonindo's Avatar
Thread Starter
Banned
 
Joined: Jun 2004
Posts: 405
Likes: 2
Car: 82 firebird
Engine: 406
conversion table?

been searching but not finding any thing that will tell me how tall and wide in inches a tire will be. is there a conversion table or formula? the tires i want to know about are 275/50/15 any help?
Reply
Old Oct 15, 2012 | 11:42 AM
  #2  
87350IROC's Avatar
Supreme Member
iTrader: (2)
 
Joined: May 2002
Posts: 4,449
Likes: 8
From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Re: conversion table?

Sure.

That tire is 275mm wide. There are 25.4mm per inch. So 275/25.4 = 10.8" wide.

50 is the side wall height in percent of the width. So the sidewall height is 0.5*275/25.4=5.4"

Wheel size is 15". So overall height is 15+5.4+5.4 = 25.8"

John
Reply
Old Oct 15, 2012 | 11:54 AM
  #3  
taonindo's Avatar
Thread Starter
Banned
 
Joined: Jun 2004
Posts: 405
Likes: 2
Car: 82 firebird
Engine: 406
Re: conversion table?

thank you so very much... i just hope i dont lose the formula for the next time....
Reply
Old Oct 15, 2012 | 04:13 PM
  #4  
paul_huryk's Avatar
Supreme Member
25 Year Member
 
Joined: Jul 1999
Posts: 2,754
Likes: 8
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: conversion table?

Width - divide the mm section width by 25.4

Tire diameter - multiply the section width * profile *2, divide that number by 25.4, then add that number to your wheel diamter.

Example: (275*2*.50)/25.4 + 15 = 25.73" diameter...
Reply
Old Oct 15, 2012 | 04:33 PM
  #5  
TraviZ's Avatar
Supreme Member
iTrader: (2)
 
Joined: Sep 2003
Posts: 10,494
Likes: 3
From: Woodland, CA
Car: '02 Z06
Engine: L33 5.7
Transmission: T56
Axle/Gears: Stock IRS
Re: conversion table?

http://f-body.org/gears/

put in tire size, it calculates it.
your welcome
Reply
Old Oct 15, 2012 | 07:26 PM
  #6  
ringo234's Avatar
Supreme Member
 
Joined: Feb 2004
Posts: 1,581
Likes: 3
From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: conversion table?

Originally Posted by taonindo
been searching but not finding any thing that will tell me how tall and wide in inches a tire will be. is there a conversion table or formula? the tires i want to know about are 275/50/15 any help?
Check out this sight. You convert anything from U.S.standards to metric or vice-verse.
http://www.worldwidemetric.com/measurements.html
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Linson
Auto Detailing and Appearance
28
Oct 24, 2025 02:00 PM
oil pan 4
Fabrication
2
Oct 6, 2015 11:56 AM
loud91rs
Camaros for Sale
7
Oct 5, 2015 10:05 PM
mfp189
Transmissions and Drivetrain
1
Sep 27, 2015 09:25 AM
ULTM8Z
DIY PROM
1
Sep 16, 2015 09:15 AM




All times are GMT -5. The time now is 06:21 AM.