Learned something new today
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Senior User
Joined: May 2004
Posts: 234
Likes: 0
From: Gloucester, Virginia
Learned something new today
Not enough, mind you.
So my tires are LT265/75R16 (think that's right) BFG.
The 265 (per a tire man I spoke to today) indicates millimeters.
But the 16 indicates inches.
Isn't that mixing apples and oranges?
So what does the 75 mean?
Anyone know a site where I can LEARN tire stuff?
So my tires are LT265/75R16 (think that's right) BFG.
The 265 (per a tire man I spoke to today) indicates millimeters.
But the 16 indicates inches.
Isn't that mixing apples and oranges?
So what does the 75 mean?
Anyone know a site where I can LEARN tire stuff?
Junior User
Joined: Dec 2003
Posts: 69
Likes: 0
From: CA
265mm across the top of the tire tread.
70% of the 265mm is the sidewall height of the tire.
16" rim is what the tire will mount to.
I hate mixing metric and english too. In fact, I hate the english system all together.
Pete
70% of the 265mm is the sidewall height of the tire.
16" rim is what the tire will mount to.
I hate mixing metric and english too. In fact, I hate the english system all together.
Pete
Laughing Gas
Joined: Jun 2003
Posts: 1,166
Likes: 0
From: Chino, California
Originally Posted by VolvoWrench
265mm across the top of the tire tread.
70% of the 265mm is the sidewall height of the tire.
16" rim is what the tire will mount to.
I hate mixing metric and english too. In fact, I hate the english system all together.
Pete
70% of the 265mm is the sidewall height of the tire.
16" rim is what the tire will mount to.
I hate mixing metric and english too. In fact, I hate the english system all together.
Pete
New User
Joined: Feb 2004
Posts: 21
Likes: 0
Hope this helps:
265= section width in millimeters
75= aspect ratio/section height (between ground and bottom of rim
16= rimdiameter in inches.
If you want to covert this and find out what the measuments are here is the formula
265mm divide by 25.4 = 10.4 inches wide then take that number and multiply by the aspect ratio 10.4 x .75 = 7.8. Hope this helps, I found the conversion numbers at tiresafety.com
265= section width in millimeters
75= aspect ratio/section height (between ground and bottom of rim
16= rimdiameter in inches.
If you want to covert this and find out what the measuments are here is the formula
265mm divide by 25.4 = 10.4 inches wide then take that number and multiply by the aspect ratio 10.4 x .75 = 7.8. Hope this helps, I found the conversion numbers at tiresafety.com
Posting Guru
Joined: Oct 2000
Posts: 1,355
Likes: 4
From: Western NC
Converting from mm to inch is easy, just divide by 25.4....or if you have inches, multiply by 25.4 to get millileters. One inch is 25.4 millimeters. I just recently lost a job of 14 years, in a factory where we had to convert back and forth all the time, so I have it burned in my brain.
Said tire is 265 mm wide, each sidewall is 75% of 265, or 198.75mm. Converting that to inches makes it 7.825 inches. Double it ('cause there is a sidewall on both sides of your tire) makes it 15.65 inches....add the 16-inch rim to get 31.65. Your tire is 31.65 inches tall. Now, with all that said....different tire makes make tires differently, just like you can buy clothes the same size from different makers and they won't be EXACTLY the same size. Same holds true for tires. These calculations will get you pretty close, though.
NOW...if you start talking about those 33's, that is different. The 265s are RADIAL tires, while the 33s are not. They are sized differently. A 33-12.50 is 33 inches tall and 12.5 inches wide. That's a whole different deal.........
Said tire is 265 mm wide, each sidewall is 75% of 265, or 198.75mm. Converting that to inches makes it 7.825 inches. Double it ('cause there is a sidewall on both sides of your tire) makes it 15.65 inches....add the 16-inch rim to get 31.65. Your tire is 31.65 inches tall. Now, with all that said....different tire makes make tires differently, just like you can buy clothes the same size from different makers and they won't be EXACTLY the same size. Same holds true for tires. These calculations will get you pretty close, though.
NOW...if you start talking about those 33's, that is different. The 265s are RADIAL tires, while the 33s are not. They are sized differently. A 33-12.50 is 33 inches tall and 12.5 inches wide. That's a whole different deal.........
Last edited by RedTaurus94; Jun 8, 2004 at 10:03 PM.
