How many inches is 225 tire


What do the numbers on tires mean?

Tire Sizes Explained

Section width of tire (Example: P

225/45R17 91V)

The three digits following the service type prefix (if present) tell us the cross-sectional width of the tire in millimeters.

In the example above, the tires width, measured from the widest point of the inner sidewall to the widest point of the outer sidewall when properly mounted, is 225 millimeters. The section width can be converted to inches by dividing the width in millimeters by 25.4 like so: (225 millimeters) / (25.4 mm/in) = 8.86 inches.

Aspect ratio of sidewall (Example: P225/

45R17 91V)

The two-digit number that usually follows the tire's section width tells us the aspect ratio, or tire profile measurement.

In this example, the 45 indicates that the sidewall distance, from the wheel rim to the outside of the tread, is 45% of the section width. A lower aspect ratio means a lower-profile tire with a shorter sidewall, while a tire with a higher aspect ratio will have a taller sidewall and look more like a donut. Because we know that the tire size shown in this example has a section width of 8.86 inches and the aspect ratio is 45%, the sidewall height for this tire is 3.98 inches: (8.86 inches) x (.45) = 3.98 inches.

Tire and wheel diameter (Example: P225/45R

1791V)

Again using our example tire size from above, the 17 means that the tire should be matched to a 17-inch diameter wheel.

Tires usually come in the following widths (in inches): 8, 10, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 26, and 28. Tires in these sizes are typically found on most passenger cars, light-duty light trucks, SUVs, minivans, and vans. Tires with a rim diameter measured in inches are called "inch rim" sizes.

Unique wheel diameters

In addition to the inch rim sizes, there are also some unique tire sizes out there. Although not as common, tires are made in half-inch diameters for some heavy-duty light trucks, box vans, and heavy-duty trailers. These sizes are usually 14. 5, 15.5, 16.5, 17.5, and 19.5 inches, and an example would be 33x12.5R16.5 118R.

Tires and wheels with unique rim diameters should never be combined with traditional inch rim tires and wheels. Before mounting tires on wheels, the tire and wheel diameters should always be confirmed to match.

More info included in the tire size

Internal construction (example: P225/45

R17 91V)

When a letter (R, D, or B) follows the two-digit aspect ratio, it tells us the tire's construction. In this example, the R means that the tire has radial construction. Over 98% of all tires sold today are radial tires, where the internal body plies of the tire radiate outward from the center. If there's a D instead of an R, the tire has a bias ply construction, meaning that the internal body plies of the tire crisscross on a diagonal pattern. In belted tires (marked as B), the internal plies crisscross like in a D construction, but there's also an extra layer of reinforcing belts under the tread area. Belted tires are rarely seen these days.

Speed rating (Example: P225/45R17 91

V)

Today, the only speed rating still included in the tire size is the Z rating (sports cars). Since 1991, all other speed ratings are included in the service description, as shown below.

Service description rating (Example: P225/45R17

91V)

Since 1991, the service description rating is mandatory for all speed ratings (except Z-rated tires) and appears at the end of the tire's size brand. The service description is used to identify the tire's load index (91 in the example above) and speed rating (V in the example).

For more on load indexes and speed ratings, read Breaking the tire code: Understanding tire service description, load index, and speed rating

Get the right tires for your car or truck!

SHOP FOR TIRES

Nitrogen vs. air: Which is best?
It’s been a hot debate amongst tire nerds for years. We investigated and have the answer (sort of).

Original Equipment tires vs. replacement tires
Is it best to stick with your car's Original Equipment tires, or try something different? We’ll help you decide.

Your vehicle's trim/style
This is a pretty important bit of info when you’re buying tires. We’ll tell you how to find your trim level.

Helpful Tire Info - BUDNIK

Our chart shows the overall section width, the outside diameter, the sidewall height and the recommended rim width range.

If your car requires something unique, start with picking the tire for the end of the car that is the most difficult.

If you’ve mini-tubbed the rear for example, and are going to run a big tire with less brand/tread/size choices, start by figuring out that size and what your options are. Then see if the those tire manufacturers also make a matching tire for your front.

We’ve included the sidewall height of the tire as a quick way to make sure your front tire doesn’t have a taller sidewall than your rear tire when doing staggered sizes. That’s usually not a good look.

There is a recommended rim width range for any given tire size with the ideal width usually around the middle of that spread. Some things to consider are how much sidewall bulge you want to see and most importantly, how wheel width affects the tires ride, handling and wear characteristics.

For grip and even wear the wheel width needs to allow for a good contact patch where the tread meets the pavement.

A wider wheel tends to make the tire more responsive to steering inputs but also taken to extremes can make the ride harsh because the sidewall doesn’t flex as easily.

A narrower wheel can give up some of that responsive handling and will tend to give a softer ride because the sidewall has more curve that flexes more easily.

Budnik Tire Chart     
      
      
SIZEOverall DiameterOverall (section) WidthSidewall HeightApprox Rim WidthsNitto Tires
205/40-1723. 58.13.37.0-7.5NT01
205/45-1724.38.13.67 
205/50-1725.18.147 
215/35-1722.98.537.0-8.5 
215/40-1723.88.53.47.0-8.5 
215/45-1724.78.53.87.0-8.0 
225/35-1723.28.93.17.5-9.0 
225/40-1724.18.93.57.5-9.0 
225/45-17258.947.0-8.5 
225/50-1725.98.94.46.0-8.0 
235/40-1724.49.33.78.0-9.5NT05,NT01
235/45-1725.39.34. 27.5-9.0NT555, INVO
235/50-1726.39.34.66.5-8.5 
245/35-1723.89.63.48.0-9.5 
245/40-1724.79.63.98.0-9.5INVO
245/45-1725.79.64.37.5-9.0INVO, NT01
245/50-1726.79.64.97.0-8.5 
255/40-17251048.5-10.0NT05,NT555,NT01
255/45-1726104.58.0-9.5 
265/40-1725.310.44.29.0-10.0 
275/40-1725.710.84.49.0-11.0 
275/50-1727.810.85.47.5-9.5 
285/40-172611. 24.59.5-11.0NT555
315/35-1725.712.44.311.0-12.0NT05,NT555,NT01
      
18″Overall DiameterOverall (section) WidthSidewall HeightApprox Rim Widths 
205/40-1824.58.13.27.0-8.0 
215/35-1823.98.537.0-8.5 
215/40-1824.88.53.47.0-8.5 
215/45-1825.68.53.87.0-8.0 
225/35-1824.28.93.17.5-9.0 
225/40-1825.18.93.67.5-9.0NT05,NT555,NT01
225/45-18268.947.0-8.5NT555, INVO
235/35-1824. 59.33.29.0-9.5 
235/40-1825.49.33.78.0-9.5NT05, NT555, NT01
235/45-1826.39.34.27.5-9.0 
245/35-1824.89.63.48.0-9.5 
245/40-1825.79.63.98.0-9.5NT05,NT555,INVO,NT01
245/45-1826.79.64.47.5-9.0NT555, INVO
245/50-1827.69.64.87.0-8.5 
255/35-1825103.58.5-10.0NT05, NT555
255/40-18261048.5-10.0 
255/45-1827104.58.0-9.5 
265/35-1825.310.43.79.0-10.0NT05, NT555, INVO
265/40-1826. 310.44.29.0-10.0 
275/35-1826.710.83.89.0-11.0NT555, INVO,NT01
275/45-1826.710.84.98.5-10.5 
285/35-1825.911.23.99.5-11.0NT05, NT555
295/35-1826.111.64.110.0-12.0NT05. INVO
315/30-1825.412.43.711.0-12.0NT05,NT01
335/30-1825.913.2412.0-13.0 
345/30-1826.113.64.112.0-14.0 
      
19″Overall DiameterOverall (section) WidthSidewall HeightApprox Rim Widths 
225/40-1926.18.93. 57.0-9.0NT05, INVO
235/35-1925.59.33.28.0-9.5NT05, NT555,NT01
235/40-1926.49.33.78.0-9.5 
245/35-1925.89.63.48.0-9.5NT05, NT555, INVO
245/40-1926.79.63.98.0-9.5NT05, INVO
245/45-1927.79.64.37.5-9.0 
255/30-19251038.5-9.5INVO
255/35-1926103.58.5-10.0INVO
255/40-19271048.5-10.0NT05, INVO
265/35-1926.310.43.79.0-10.5 
275/35-1926.610.83.89.0-11.0INVO
275/40-1927. 710.84.39.0-11.0 
285/30-1925.711.23.49.5-10.5INVO
285/35-1926.911.23.99.5-11.0INVO
285/40-192811.24.59.5-11.0 
295/35-1927.111.64.110.0-12.0INVO
305/30-1926.2123.610.5-11.5NT05,NT01
305/35-1927.4124.210.5-11.5 
315/40-1928.912.4511.0-12.0INVO
325/30-1926.712.83.812.0-13.0INVO
345/30-1927.113.64.112.0-14.0INVO
345/35-1928.513.64.811.0-13.5 
      
20″Overall DiameterOverall (section) WidthSidewall HeightApprox Rim Widths 
225/35-2026. 28.93.17.5-9.0NT555
235/30-2025.69.32.88.5INVO
235/35-2026.59.33.28.0-9.5 
235/45-2028.39.34.27.5-9.0 
235/55-2030.29.35.16.5-8.5 
245/30-2025.89.62.98.0-9.0NT555, INVO
245/35-2026.89.63.48.0-9.5NT555, INVO
245/40-2027.79.63.98.0-9.5NT555, INVO
245/45-2028.79.64.37.5-9.0INVO
245/50-2029.69.64.87.0-8.5 
255/30-20261038.5-9.5INVO
255/35-2027103. 58.5-10NT05, NT555, INVO
255/40-20281048.5-10NT01
255/45-2029104.58.0-9.5NT05, INVO
255/50-20301057.0-9.0 
255/55-2031105.57.0-9.0 
265/30-2026.310.43.19.0-10.0 
265/35-2027.310.43.79-10.5NT555
265/40-2028.310.44.29.0-10.5 
265/45-2029.410.44.78.5-10.0 
275/30-2026.510.83.29.0-10.0NT555, INVO
275/35-2027.610.83.99.0-11.0NT05, NT555, INVO
275/40-2028. 710.84.39.0-11.0INVO
275/45-2029.710.84.98.5-10.0 
285/30-2026.711.23.49.5-10.5NT555, INVO
285/35-2027.911.23.99.5-11.0NT01
285/40-202911.24.59.5-11.0 
285/45-2030.111.259.0-10.5 
295/30-202711.63.510.0-11.0 
295/35-2028.111.64.110.0-11.5INVO
295/40-2029.311.64.610.0-12.0 
295/45-2030.511.65.29.5-11.0 
295/50-2031.611.65.88.0-10.5 
305/35-2028. 4124.210.0-12.0 
305/40-2029.6124.810.0-12.0 
315/35-2028.712.44.310.5-12.5NT05, INVO
335/25-2026.613.2412.0-13.00 
335/30-2027.913.2411.5-12.5 
345/25-2026.813.63.412.0-13.0INVO
      
LT TRUCKOverall DiameterOverall (section) WidthSidewall HeightApprox Rim Widths 
265/60-2032.510.46.37.5-9.5TERRA
275/60-203310.86.57.5-9.5TERRA
285/55-6032.311.26.28.0-10. 0TERRA
285/60-2033.511.26.78.0-10.0 
305/55-2033.2126.68.5-11.0TERRA
      
22″Overall DiameterOverall (section) WidthSidewall HeightApprox Rim Widths 
235/30-2227.69.32.88.5 
245/30-2227.89.62.98.0-9.0NT555, INVO
255/30-22281038.0-8.5NT555, INVO
255/35-2229103.58.5-10INVO
265/30-2228.310.43.19.0-10.0INVO
265/35-2229.310.43.79.0-10.5420S
265/40-2230. 310.44.29.0-10.5420S, NT555
265/45-2231.410.44.78.5-10.0 
275/30-2228.510.83.29.0-10.0INVO
275/40-2230.710.84.39.0-11.0420S
275/45-2231.710.84.98.5-10.0420S
285/30-2228.711.23.49.5-10.5INVO
285/35-2229.911.23.99.5-11.0420S, NT555
285/40-223111.24.59.5-11.0420S
285/45-2232.111.259.0-11.0 
295/30-222911.63.510.0-11.0 
295/45-2232.511.65.29.5-11.0 
305/35-2230. 4124.210.5-11.5 
305/40-2231.6124.810.0-12.0 
305/45-2232.8125.49.0-1.0 
315/25-2228.212.43.111.0-12.0 
335/25-2228.510.83.211.5-12.5 
335/30-2228.713.73.312.0-13.0 

Table showing the relationship between the width of a passenger car tire and the fit width of a wheel rim

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* These tables are for informational purposes only and are not intended as a guide to action. For specific applicability of non-standard discs, please contact the vehicle manufacturer or vehicle dealer. We do not test wheel interchangeability and cannot make recommendations.


Table of car tire width versus rim width *

Landing width of the disk Minimum tire width Optimum tire width Maximum tire width
5. 0 inches 155 mm 165 or 175 mm 185 mm
5.5 inches 165 mm 175 or 185 mm 195 mm
6.0 inches 175 mm 185 or 195 mm 205 mm
6.5 inches 185 mm 195 or 205 mm 215 mm
7.0 inches 195 mm 205 or 215 mm 225 mm
7.5 inches 205 mm 215 or 225 mm 235 mm
8.0 inches 215 mm 225 or 235 mm 245 mm
8.5 inches 225 mm 235 or 245 mm 255 mm
9.0 inches 235 mm 245 or 255 mm 265 mm
9.5 inches 245 mm 255 or 265 mm 275 mm
10. 0 inches 255 mm 265 or 275 mm 285 mm
10.5 inches 265 mm 275 or 285 mm 295 mm
11.0 inches 275 mm 285 or 295 mm 305 mm
11.5 inches 285 mm 295 or 305 mm 315 mm
12.0 inches 295 mm 305 or 315 mm 325 mm
12.5 inches 305 mm 315 or 325 mm 335 mm

Metric tire width*

Profile Designation in metric dimension Permissible range of landing width of the disc
35 Series 275/35R17 9.0-10.5
335/35R17 11. 0-13.0
345/35R15 11.0-13.5
40 Series 285/40R15 11.0-13.5
215/40R15 7.0-8.5
245/40R17 8.0-9.5
255/40R17 8.5-10.0
265/40R17 8.5-10.0
235/40R18 8.0-9.5
45 Series 195/45/R15 6.5-7.5
215/45R15 7.0-8.5
255/45R15 8.5-10.0
205/45R16 7.0
225/45R16 7.5-9.0
245/45R16 8.0-9.5
215/45R17 7.0-8.5
235/45R17 8.0-9.5
255/45R17 8. 5-10.5
50 Series 175/50R13 5.0-6.0
195/50R14 5.5-7.0
205/50R15 5.5-7.5
215/50R15 6.0-7.5
225/50R15 6.0-8.0
195/50R16 5.5-7.0
205/50R16 5.5-7.5
225/50R16 6.0-8.0
235/50R16 6.5-8.5
215/50R17 6.5-7.5
55 Series 205/55R14 5.5-7.5
185/55R15 6.0-6.5
195/55R15 5.5-7.0
205/55R15 5.5-7.5
205/55R16 5.5-7.5
225/55R16 6. 0-8.0
60 Series 185/60R13 5.0-6.5
205/60R13 5.5-7.5
185/60R14 5.0-6.5
195/60R14 5.5-7.0
205/60R14 5.5-7.5
195/60R15 5.5-7.0
205/60R15 5.5-7.5
215/60R15 6.0-7.5
225/60R15 6.0-8.0
235/60R15 6.5-8.5
65 Series 185/65R15 5.0-6.5
195/65R15 5.5-7.0
205/65R15 5.5-7.5
215/65R15 6.0-7.5
70 Series 165/70R10 4.5-5.5
175/70R12 5. 0-6.0
175/70R13 5.0-6.0
205/45R16 7.0
185/70R13 5.0-6.5
185/70R14 5.0-6.5
195/70R15 5.5-7.0
205/70R14 5.5-7.5
185/70R15 5.0-6.5
205/70R15 5.5-7.5
215/70R15 6.0-7.5
82 Series 155R12 4.0-5.0
155R13 4.0-5.5
165R13 4.0-5.5
175R14 4.5-6.0
185R14 4.5-6.0
165R15 4.0-5.5

P-metric tire width*

Profile Designation in metric dimension Permissible range of landing width of the disc
75 Series P205/75R15 5. 5-7.5
P215/75R15 5.5-7.5
P225/75R15 6.0-8.0
P235/75R15 6.0-8.0
80 Series P155/80R13 4.5-5.5
P165/80R13 4.5-6.0
P175/80R13 4.5-6.0
P185/80R13 5.0-6.5
35 Series P315/35R17 10.0-12.0
40 Series P275/40R17 8.5-10.0
50 Series P215/50R13 5.5-8.5
P235/50R13 6.0-9.0
P245/50R14 6.5-9.0
P225/50R15 6.0-8.0
P295/50R15 7.5-11.0
P225/50R16 6. 0-8.0
P245/50R16 6.5-9.5

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Off-Road Tire and Wheel Size Chart

Tire and wheel size matching is an important step towards safety and driving comfort for any driver. A frivolous attitude to this issue is fraught with serious consequences, both for the technical condition of the vehicle, and for the health and life of drivers and passengers. Consider this problem on SUVs, crossovers or pickup trucks of various classes. Of course, here the size range is not so large, which makes it easier to select discs for tires. To begin with, it is worth recalling what indicators are important when deciding whether tires and wheels match:

Wheel marking with dimensions R13 4x98 ET35 J5 D58.6

The table below shows almost all off-road vehicle wheel sizes. We remind you that on our website there is also an option for selecting discs by car brand . Also on our website there is similar information regarding cars .

Tire/rim matching chart

Wheel diameter Tire size Wheel rim width (inches)
Minimum Recommended Maximum
16" 7.50R16 5.50 6.00 6.50
235/85R16 6.0 6.5 7.5
15" 195/80R15 5.0 5.5 6.5
215/80R15 5. 5 6.0 7.0
16" 205/80R16 5.0 5.5 7.0
215/80R16 5.5 6.0 7.0
15" 215/75R15 5.5 6.0 7.0
225/75R15 6.0 6.0 7.5
235/75R15 6.0 6.5 8.0
255/75R15 6.5 7.0 8.5
16" 225/75R16 6. 0 6.0 7.5
15" 195/70R15 5.0 6.0 6.5
205/70R15 5.0 6.0 7.0
265/70R15 7.0 8.0 9.0
16" 215/70R16 5.5 6.5 7.0
225/70R16 6.0 6.5 7.5
235/70R16 6.0 7.0 8.0
245/70R16 6. 5 7.0 8.0
265/70R16 7.0 8.0 9.0
275/70R16 7.0 8.0 9.0
17" 225/70R17 6.0 6.5 7.5
265/70R17 7.0 8.0 9.0
15" 185/65R15 5.0 5.5 6.5
16" 215/65R16 6.0 6.5 7.5
255/65R16 7. 0 7.5 9.0
17" 235/65R17 6.5 7.0 8.5
245/65R17 7.0 7.0 8.5
265/65R17 7.5 8.0 9.5
275/65R17 7.5 8.0 9.5
16" 215/60R16 6.0 6.5 7.5
236/60R16 6.5 7.0 8.5
18" 235/60R18 6. 5 7.0 8.5
275/60R18 7.5 8.0 9.5
285/60R18 8.0 8.5 10.0
17" 225/55R17 6.0 7.0 8.0
235/55R17 6.5 7.5 8.5
275/55R17 7.5 8.5 9.5
18" 255/55R18 7.0 8.0 9.0
19" 255/55R19 7. 0 8.0 9.0
275/55R19 7.5 8.5 9.5
285/55R19 8.0 9.0 10.0
17" 255/50R17 7.0 8.0 9.0
18" 235/50R18 6.5 7.5 8.5
285/50R18 8.0 9.0 10.0
19" 255/50R19 7.0 8.0 9.0
20" 255/50R20 7. 0 8.0 9.0
275/50R20 7.5 8.5 9.5
18" 255/45R18 8.0 8.5 9.5
19" 235/45R19 7.5 8.0 9.0
275/45R19 8.5 9.0 10.5
285/45R19 9.0 9.5 10.5
20" 265/45R20 8.5 9.0 10.0
19" 255/40R19 8. 5 9.0 10.0
20" 275/40R20 9.0 9.5 11.0
20" 315/35R20 10.5 11.0 12.5
21" 285/35R21 9.5 10.0 11.0
22" 285/35R22 9.5 10.0 11.0
21" 325/30R21 11.5 11.5 13.0
22" 295/30R22 10. 5 10.5 11.5

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