P195/195 controversy
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From: Pittsburgh
P195/195 controversy
Is there any difference between P195 60 R15 & 195 60 R15 tires? I'd like to buy some tire chains for the upcoming winter,but the Laclede (as well as Tirechains.com)chains I was interested in indicates a difference between the two sizes.I have a 93 accord,according to the specs the tires should be P195's,but the tires on the rims indicate 195's.This is clearly a matter of price as the chains for the regular 195's do not come in a lower priced version.Any help or advice would be much appreciated.
Thanks!
Thanks!
be professional
Joined: Oct 2002
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From: Pittsburgh, PA
No difference. "P" just indicates a passenger car tire, as opposed to other codes such as an "LT" designation which would indicate a light truck application, etc.
Often times, tire manufacturers will omit the "P" when molding the size on the side of the tire.
You have nothing to worry about.
Often times, tire manufacturers will omit the "P" when molding the size on the side of the tire.
You have nothing to worry about.
Honda-Tech Member
Joined: Jan 2004
Posts: 6,456
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From: New England, USA
Is there any difference between P195 60 R15 & 195 60 R15 tires? I'd like to buy some tire chains for the upcoming winter,but the Laclede (as well as Tirechains.com)chains I was interested in indicates a difference between the two sizes.I have a 93 accord,according to the specs the tires should be P195's,but the tires on the rims indicate 195's.This is clearly a matter of price as the chains for the regular 195's do not come in a lower priced version.Any help or advice would be much appreciated.
Thanks!
Thanks!
195 = Tire Cross sectional dimension (sidewall to sidewall at it's widest point) measured in Millimeters
60 = Aspect ratio (Measurement between the bead and the tread), as discribed as a percentage of the cross sectional figure (equals 117mm)
15 = Rim Diameter.
Tread width can be infered, but is not spelled out in this nomenclature.
Also available, is both wear and tempurature ratings on the tires side wall.
P
Honda-Tech Member
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From: usa
there is a difference, its very minute but there is a difference. a P195 is a P-metric tire, this is the common way to measure a tire in the us. getting more common is the E-metric. this is the European standard on how tires are sized, how much air they can safely handle, as well as load carrying capacity's
ill see if i can find a link
ill see if i can find a link
Honda-Tech Member
Joined: May 2005
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From: usa
http://www.tirerack.com/tires/tirete....jsp?techid=24
Originally Posted by tirerack.com
What's the difference between the tire sizes of P225/60R16 and 225/60R16? The obvious answer is the "P" in front of the first size, but just what does the "P" stand for and what does it tell us about the tires?
P-metric sized tires are the ones with the "P" at the beginning of the tire size, (such as P225/60R16 listed above). They were introduced in the United States in the late 70s and are installed on vehicles primarily used to carry passengers including cars, station wagons, sport utility vehicles and even light duty pickup trucks. Their load capacity is based on an engineering formula which takes into account their physical size (the volume of space for air inside the tire) and the amount of air pressure (how tightly the air molecules are compressed). Since all P-metric sizes are all based on the formula for load, vehicle manufacturers can design their new vehicles (weights and wheelwell dimensions) around either existing or new tire sizes.
Metric or Euro metric sized tires are the ones without the "P" at the beginning, (such as 185R14 or the 225/60R16 listed above). Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. However, since Euro metric sizes have been added over time based on the load and dimensional requirements of new vehicles, the tire manufacturers designed many new tire sizes and load capacities around the needs of new vehicles. Not quite as uniform as creating sizes using a formula, but they got the job done.
Euro metric and P-metric tires in the same size (i.e. P225/60R16 & 225/60R16) are equivalent in their dimensions with just slight differences in their load capacity calculations and inflation pressure tables. So if Euro metric and P-metric tires have the same numeric size, the same tire performance category and the same speed rating, the two are considered equivalent and interchangeable if used in axle pairs or sets of four. Simply continue to follow your vehicle manufacturer's recommended inflation pressures provided in the vehicle's owner's manual or on the vehicle tire placard (usually found on the door jamb or on the glovebox or counsel door) for either size tire.
P-metric sized tires are the ones with the "P" at the beginning of the tire size, (such as P225/60R16 listed above). They were introduced in the United States in the late 70s and are installed on vehicles primarily used to carry passengers including cars, station wagons, sport utility vehicles and even light duty pickup trucks. Their load capacity is based on an engineering formula which takes into account their physical size (the volume of space for air inside the tire) and the amount of air pressure (how tightly the air molecules are compressed). Since all P-metric sizes are all based on the formula for load, vehicle manufacturers can design their new vehicles (weights and wheelwell dimensions) around either existing or new tire sizes.
Metric or Euro metric sized tires are the ones without the "P" at the beginning, (such as 185R14 or the 225/60R16 listed above). Using metric dimensions to reflect a tire's width actually began in Europe in the late 60s. However, since Euro metric sizes have been added over time based on the load and dimensional requirements of new vehicles, the tire manufacturers designed many new tire sizes and load capacities around the needs of new vehicles. Not quite as uniform as creating sizes using a formula, but they got the job done.
Euro metric and P-metric tires in the same size (i.e. P225/60R16 & 225/60R16) are equivalent in their dimensions with just slight differences in their load capacity calculations and inflation pressure tables. So if Euro metric and P-metric tires have the same numeric size, the same tire performance category and the same speed rating, the two are considered equivalent and interchangeable if used in axle pairs or sets of four. Simply continue to follow your vehicle manufacturer's recommended inflation pressures provided in the vehicle's owner's manual or on the vehicle tire placard (usually found on the door jamb or on the glovebox or counsel door) for either size tire.
Honda-Tech Member
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From: Looking for SloMofo....
Euro metric and P-metric tires in the same size (i.e. P225/60R16 & 225/60R16) are equivalent in their dimensions with just slight differences in their load capacity calculations and inflation pressure tables. So if Euro metric and P-metric tires have the same numeric size, the same tire performance category and the same speed rating, the two are considered equivalent and interchangeable if used in axle pairs or sets of four. Simply continue to follow your vehicle manufacturer's recommended inflation pressures provided in the vehicle's owner's manual or on the vehicle tire placard (usually found on the door jamb or on the glovebox or counsel door) for either size tire.
^^^^^^^^ This pretty much sums it up, they are the same.
^^^^^^^^ This pretty much sums it up, they are the same.
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