Tire sizes are so confusing
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Elder User
Joined: Aug 2006
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From: Hewitt, Minnesota
Tire sizes are so confusing
From personaly expeirence I've found like 4 types of tire measurements, I'll give examples.
L78-15, 13.6X38, 235/75R15, 32x9.50-15LT And they are opposites For example 13.6X38 is 13.6 wide on a 38 inch rim where as 32X9.50-15LT 9.50 wide on a 15 inch rim. Why can't they just standardize it? And I have no idea on L78-15 It seems to be common on old snow tires though
L78-15, 13.6X38, 235/75R15, 32x9.50-15LT And they are opposites For example 13.6X38 is 13.6 wide on a 38 inch rim where as 32X9.50-15LT 9.50 wide on a 15 inch rim. Why can't they just standardize it? And I have no idea on L78-15 It seems to be common on old snow tires though
Post Fiend
Joined: Jan 2004
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From: Elkhart IN
On the l78-15, the L would be a load rating, the 78 would be the aspect ratio, and the 15 would be the rim size. Normally there would be 2 letters, a load rating and a r for radial, but I guess this tirs a bias ply.
Cargo Master
Joined: Aug 2004
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From: Lynnwood, WA
Actually, tire sizes *are* standardized.
L78-15 -- an obsolete size that you can only find on old tires.
13.6x38 -- never heard of that
32X9.50-15LT is for floatation tires -- I think only used on some light truck tires.
235/75R15 is a standard size, though usually there's a P or LT in front of it
L78-15 -- an obsolete size that you can only find on old tires.
13.6x38 -- never heard of that
32X9.50-15LT is for floatation tires -- I think only used on some light truck tires.
235/75R15 is a standard size, though usually there's a P or LT in front of it
Thread Starter
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Elder User
Joined: Aug 2006
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From: Hewitt, Minnesota
Originally Posted by aurgathor
Actually, tire sizes *are* standardized.
L78-15 -- an obsolete size that you can only find on old tires.
13.6x38 -- never heard of that
32X9.50-15LT is for floatation tires -- I think only used on some light truck tires.
235/75R15 is a standard size, though usually there's a P or LT in front of it
L78-15 -- an obsolete size that you can only find on old tires.
13.6x38 -- never heard of that
32X9.50-15LT is for floatation tires -- I think only used on some light truck tires.
235/75R15 is a standard size, though usually there's a P or LT in front of it
Cargo Master
Joined: Aug 2004
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From: Lynnwood, WA
Originally Posted by Old Rust Bucket
Actualy the 13.6X38 is a very common tire. As is the 15.5X38 or the 16.9X30. But the point is I can actualy understand it. As I said the first number is the tire width and the second number is the rim size.
Cargo Master
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From: Lynnwood, WA
OK. That explains why I never heard of them. Big wheels are normally found on AG or on special purpose vehicles.
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what are the specs on the L78-15? i cant find a tire size calculator that will take that size? thats what size tires my truck shows to use from the factory
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Cargo Master
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From: Lynnwood, WA
http://www.performanceplustire.com/p...-15#prodAnchor
http://www.turbinecar.com/tires.htm
Not as tall, but 235/75R15 is the usual replacement
http://www.turbinecar.com/tires.htm
Not as tall, but 235/75R15 is the usual replacement
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