Tire Size Meaning?
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Senior User
Joined: Aug 2012
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From: Ft. Worth
Tire Size Meaning?
Hey Guys...Say my tires are 235-75R-16...Does that mean I have 32" tires?
I mean I hear about 33", 35", etc...just trying to determine what the inches mean and how it's figured...
Thanks
I mean I hear about 33", 35", etc...just trying to determine what the inches mean and how it's figured...
Thanks
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
LT means light truck
P means passenger car
235 is section width in mm. (sidewall to sidewall on specified rim size)
75 is aspect ratio (the height of the tire from bead to tread is 75% of 235mm)
15 is rim diameter
Here's a calculator, it says your tires are 28.9" tall
P means passenger car
235 is section width in mm. (sidewall to sidewall on specified rim size)
75 is aspect ratio (the height of the tire from bead to tread is 75% of 235mm)
15 is rim diameter
Here's a calculator, it says your tires are 28.9" tall
Postmaster
Joined: Feb 2011
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bashby, while you're correct in the tire you described, the OP put those numbers on a 16" rim, which comes to a tire size i've never heard of. assuming we're talking about the truck in his signature, likely he either has 235/85r16 or 265/75r16, each of which are just a touch below 31" - i want to say 30.8 or something, but don't feel like calculating it again
Moderator
Joined: Jan 2001
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From: Virginia
Some tires are still sold in inch sizes. My truck has 35x12.50x16.5 tires on it, which are 35 inches tall and 12 1/2 inches wide on 16 1/2 inch rims. That's why you "hear" those sizes once in awhile, because they are still sold that way.
Fleet Mechanic
Joined: Jun 2010
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From: North Carolina
Here's a tire size calculator that allows you to convert between the different tire size types: Tire Size Calculator - tire & wheel plus sizing
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
Automotive Calculators offer to you by Ford Trucks Enthusiasts | www.ford-trucks.com
There's the link I meant to put in my post.... My life story, always an inch too short.
There's the link I meant to put in my post.... My life story, always an inch too short.
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