2007-10-11 06:42:16 · 18 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation
the size is written on the tyre wall - on the side.
2007-10-11 06:44:34 · answer #1 · answered by alex s 5 · 0⤊ 0⤋
Are you asking for the overall diameter of the tire?
I will assume so.
Lets use the size P225/60R16 as our example tire.
1) The P simply means that it is a passenger tire (4-ply)
2) The R simply means that it is a radial tire
3) The 225 is the width of the tread (from sidewall to sidewall) in millimeters
4)The 60 means that the sidewall (from rim to tread) is 60% of the tread width (225 mm)
5) The 16 means that the diameter of the rim is 16 inches
To calculate tire height in inches:
calculate 60% of 225 mm. In this case it is 135 mm.
convert to inches by dividing by 25.4. In this case 5.31 inches.
So the sidewall is 5.31 inches.
Now you have 5.31 inches above the rim and 5.31 inches below the rim, and 16 inches worth of rim.
5.31 + 5.31 + 16 = 26.62 inches.
This particular tire (P225/60R16) is 26.62 inches in diameter, or 26.62 inches tall.
2007-10-11 14:00:02 · answer #2 · answered by Anonymous · 1⤊ 0⤋
The correct way to decifer the numbers on the tire are as follows.
example 225/55R15
225 - tire is 225 mm wide, or 8.86 inches
55 - thickness from inside diameter to outside diameter, as a percentage of tire width. 55% of 225mm is 123.75mm, or 4.87 inches
R15 is the rim diameter, in inches. 15 inches
Please note the conversion from mm to inches is to divide the mm by 25.4
2007-10-11 14:03:20 · answer #3 · answered by Clay T 1 · 1⤊ 0⤋
It should say the size on the tire itself. Check the sidewall of the tire for raised lettering. Or inside the driver's door there is usually a sticker on the edge of the door (where you can see painted metal when the door is open.
2007-10-11 13:46:18 · answer #4 · answered by April L 2 · 0⤊ 0⤋
well, first off the VAST majority of answers on here are incorrect... please dont listen to the people who are telling you that R or P16 means that the tire is 16 inches wide... thats practically a racing slick for a high performace drag car... lol
Anyways to answer your question correctly there is a conversion table for most tires since they give you a number in different units.. for example: I have 285x75xR16 tires on my dodge ram.. 285 is width of the tire, and it converts to 12.5 inches, the 75 denotes the sidewall height (side of tire from rim to tread), and the R16 denotes the that it is a radial tire and 16 is the rim diameter. DONT LISTEN to these people who told you that R is the size. The # after R is the RIM diameter.... but you can get tires with small sidewalls (called low profile tires) or tires with very large/tall sidewalls( off road/rally/snow type tires)
There are metric and US sizes, depending on what brand of tire you have.. I have Toyo tires, from Japan, so its in metric.
Conversion tables are usually found in tire brochures, at dealerships and tire repair shops, but you can find these numbers I mentioned above right on the side of your tires!
2007-10-11 13:45:55 · answer #5 · answered by Peter Griffin 6 · 2⤊ 1⤋
The side wall has this information. For instance, if you see the number P16, the tire is sixteen inches wide. You could also just use a tape measure, of course.
2007-10-11 13:46:39 · answer #6 · answered by XOUT 4 · 0⤊ 1⤋
Read the size printed on the side wall. R14x75 for example means it is 14". The second number indicates the width.
2007-10-11 13:46:07 · answer #7 · answered by Dirt E. Deeds 3 · 0⤊ 0⤋
The size of a tire usually is shown on the side of it.
2007-10-11 13:45:01 · answer #8 · answered by Lelar 6 · 0⤊ 0⤋
It says the size on the sidewall of the tire. like 225/r16 or such. That is the tire size.
2007-10-11 13:44:58 · answer #9 · answered by Anonymous · 0⤊ 0⤋
It is the last two numbers on the tire wall.
2007-10-11 13:45:21 · answer #10 · answered by chillzilla 1 · 0⤊ 0⤋
It's written on the tire. Or you could measure it or the rim. It's the inside diameter.
2007-10-11 13:45:18 · answer #11 · answered by tamarack58 5 · 0⤊ 0⤋