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MRW  ROCK CRAWLER BEADLOCK WHEELS 15"WHEEL 16"WHEEL 16.5"WHEEL 17"WHEEL 18"WHEEL 20"WHEEL
MRW  OFF ROAD WHEELS 15"WHEEL 16"WHEEL 16.5"WHEEL 17"WHEEL 18"WHEEL 20"WHEEL
MRW MANUFACTURERS OF "CUSTOM BUILT" MOTORSPORT WHEELS SINCE 1955

 

 TIRE SIZE COMPARISON CHARTS

DIAMETER TO CIRCUMFERENCE CHART | METRIC TO IMPERIAL CHART | ANTIQUE TO METRIC CHART | LETTER SPEED RATING CHART |

MRW WILL NOT BE LIABLE FOR ANY MISINFORMATION OR TYPING ERRORS -- THIS LISTING IS FOR REFERENCE ONLY

METRIC TIRE SIZE CHART

The dimensions shown are for reference only. Tires from some manufacturers differ. The rim width you choose to use will also change these  dimensions .If your tire diameter is not listed (multiply diameter x 3.1416) or rap a thin stagger tap around your inflated tire mounted on your chosen rim for an exact measurement.

Tire Size
Tire  Width
Rim Width 
Diameter  (
Height)		 Circumference
P175/70R13
7.0 
4.5 - 6.0
22.7
 71.3
P195/60R13
7.9
5.5 - 7.0
22.2
 69.7
P205/60R13
8.2 
5.5 - 7.5
22.7
 71.3
P215/50R13
8.9
6.0 - 7.5
21.5
 67.5
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P165-70R14 7.0
4.5 - 6.0
 23.1 72.5
P175-70R14 7.2
4.5 - 6.0
 23.6 74.1
P185/70R14
7.4 
4.5 - 6.0
24.3
 76.3
P195/70R14
7.9 
5.0 - 6.5
24.8
 77.9
P205/70R14
8.2
5.0 - 7.0
25.4
 79.8
P215/70R14
8.7 
5.5 - 7.0
25.9
 81.3
P225/70R14
9.0
6.0 - 7.5
26.5
 83.2
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P195/60R14
7.9
5.5 - 7.0
23.2
 72.9
P215/60R14
8.7 
6.0 - 7.5
24.2
 76.0
P225/60R14
9.0 
6.0 - 8.0
24.7
 77.6
P235/60R14
9.5
6.5 - 8.5
25.1
 78.8
P245/60R14
9.8
7.0 - 8.5
25.6
 80.4
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P245/50R14
10.0
7.0 - 8.5
23.7
 74.4
P265/50R14
10.9
7.5 - 9.5
24.5
 76;9
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference

P135-75R15

 5.7
4.5 - 6.0
 23.0 72.2

P145-75R15

 6.1
4.5 - 6.0
 23.6 74.1

P155-75R15

 6.2
4.5 - 6.0
 24.2 76.0

P165-75R15

 6.6
4.5 - 6.0
 24.7 77.6

P185-75R15

 8.0
5.0 - 6.5
 25.9 81.3

P195-75R15

7.4
5.0 - 6.5
 26.5 83.2

P205-75R15

 7.6
5.0 - 7.0
 27.1 85.1

P215-75R15

 8.1
5.0 - 7.0
 27.7 87.0
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P185-70R15   5.0-7.0 25.2

79.1
P195-70R15 8.3 5.0-7.0 25.7

80.7
P215/70R15
8.7 
5.5 - 7.0
26.9
 84.5
P225/70R15
9.0 
6.0 - 7.5
27.4
 86.0
P235/70R15
9.5 
6.0 - 8.0
28.0
 87.9
P255/70R15
10.2 
6.5 - 8.5
29.1
 91.4
P285/70R15
11.3 
7.5 - 9.5
30.8
 96.7
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P215/65R15
8.7
6.0 - 7.5
26.0
 81.6
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P185-60R15 7.6
5.0 - 7.0
 23.7 74.4
P195/60R15
7.9
5.5 - 7.0
24.2
 76.0
P205/60R15
8.2 
5.5 - 7.5
24.7
 77.6
P215/60R15
8.7
6.0 - 7.5
25.2
 79.1
P225/60R15
9.0
6.0 - 8.0
25.6
 80.4
P235/60R15
9.5
6.5 - 8.5
26.1
 82.0
P245/60R15
9.8
7.0 - 8.5
26.6
 83.5
P255/60R15
10.2 
7.0 - 9.0
27.1
 85.1
P275/60R15
11.0
7.5 - 9.5
28.0
 87.9
P315/60R15
13.4
8.5-11.0
29.8
93.6
P295/65R15
12.4
8.0-10.0
29.6
93.0
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P205/55R15
8.4
5.5 - 7.5
23.9
 75.1
P345/55R15
14.6
10.0-12.0
29.8
93.6
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P265/50R15
10.9
7.5 - 9.5
25.5
 80.1
P275/50R15
11.2
7.5 - 9.5
25.9
 81.3
P295/50R15
12.2 
8.0 - 10.0
26.7
 83.8
P325/50R15
13.0
9.0-12.0
27.9
87.6
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P275/65R16
11.0
7.5 - 9.5
30.1
 94.5
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P205/55R16
8.4 
5.5 - 7.5
24.9
 78.2
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P195/50R16
7.9
5.5 - 7.0
23.7
 74.4
P205/50R16
8.4
5.5 - 7.5
24.1
 75.7
P225/50R16
9.2 
6.0 - 8.0
24.9
 78.2
P255/50R16
10.3
7.0-9.0
26.1
82.0
P245/50R16
10.0
6.5 - 8.5
25.7
 80.7
P265/50R16
10.9 
7.5 - 9.5
26.5
 83.2
P295/50R16
12.2 
8.0 - 10.0
27.6
 86.7
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P315/35R17/LL
12.4
11.0-12.0
25.6
80.4
Tire Size
Tire  Width
Rim Width 
Diameter - (
Height)		 Circumference
P275/40R17/LL
11.0
9.0-11.0
25.7
80.7

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Diameter To Circumference Chart in Inches

This conversion chart is intended as a guide only. The measurements shown above and below are approximate. If your tire diameter is not listed (multiply diameter x 3.1416) or rap a thin stagger tap around your inflated tire mounted on your chosen rim for an exact measurement.

Diameter Circumference   Diameter  Circumference   Diameter Circumference
17 53-1/2   23-1/2 73-3/4   30 94-1/4
17-1/2 55   24 75-1/4   30-1/2 95-3/4
18 56-1/2   24-1/2 77   31 97-1/2
18-1/2 58   25 78-1/2   31-1/2 99
19 59-1/2   25-1/2 80   32 100-1/2
19-1/2 61-1/4   26 81-1/2   32-1\2 102
20 62-3\4   26-1\2 83-1\4   33 103-1\2
20-1\2 64-1\2   27 84-3\4   33-1\2 105-1\4
21 66   27-1\2 86-1\4   34 106-3\4
21-1\2 67-1\2   28 88   34-1\2 108-1\4
22 69   28-1\2 89-1\2   35 110
22-1\2 70-1\2   29 91   35-1\2 111-1\2
23 72-1\4   29-1\2 92-1\2   36 113

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Metric to Imperial tire conversion chart

Metric  Imperial   Metric  Imperial   Metric  Imperial
215/75/15 27.7"x 8.5"   205/85/16 29.7"x 8.1"   245/75/16 30.5"x 9.6"
225/70/15 27.4"x 8.9"   215/75/16 28.7"x 8.5"   255/70/16 30.0"x 10.0"
225/75/15 28.3"x 8.9"   225/70/16 28.4"x 8.9"   265/70/16 30.6"x 10.4"
235/75/15 29.0"x 9.3"   225/75/16 29.2"x 8.9"   265/75/16 31.6"x 10.4"
245/75/15 29.5"x 9.6"   235/70/16 29.0"x 9.3"   275/70/16 31.2"x 10.8"
255/75/15 30.0"x 10.0"   235/85/16 31.7"x 9.3"   285/75/16 32.8"x 11.2"
265/75/15 30.6"x 10.4"   245/70/16 29.5"x 9.6"   295/75/16 33.4"x 11.6

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Approximate Conversion From Antique Tire To Metric Tire Chart

1964  Back 

1965-72

80 series metric   Number 78 series  P-Metric 75 series Radial   P-Metric 70 series Radial  
5.90-13   600-13   165-13   A78-13   P165/75R13   P175/70R13  
6.40-13   650-13   175-13   B78-13   P175/75R13   P185/70R13  
7.25-13   700-13   185-13   D78-13   P185/75R13   P205/70R13  
5.90-14   645-14   155-14   B78-14   P175/75R14   P185/70R14  
6.50-14   695-14   175-14   C78-14   P185/75R14   P195/70R14  
7.00-14   735-14   185-14   E78-14   P195/75R14   P205/70R14  
7.50-14   775-14   195-14   F78-14   P205/75R14   P215/70R14  
8.00-14   825-14   205-14   G78-14   P215/75R14   P225/70R14  
8.50-14   855-14   215-14   H78-14   P225/75R14   P235/70R14  
5.90-15   600-15   165-15   A78-15   P165/75R15   P175/70R15  
6.50-15   685-15   175-15   C78-15   P175/75R15   P185/70R15  
6.40-15   735-15   185-15   E78-15   P195/75R15   P205/70R15  
6.70-15   775-15   195-15   F78-15   P205/75R15   P215/70R15  
7.10-15   825-15   205-15   G78-15   P215/75R15   P225/70R15  
7.60-15   855-15   215-15   H78-15   P225/75R15   P235/70R15  
8.00-15   885-15   230-15   J78-15   P225/75R15   P235/70R15  
8.20-15   900-15   235-15   L78-15   P235/75R15   P255/70R15  

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 14 Bias Ply Tire

Description 78-series 14"  Overall diameter   Description  70-series14"  Overall diameter   Description 60-series 14"  Overall diameter
A78-14 24.2   E70-14 25.8   E60-14 24.8
B78-14 24.7   F70-14 26.2   F60-14 25.3
C78-14 25.2   G70-14 26.8   G60-14 25.8
D78-14 25.5   H70-14 27.5   H60-14 26.4
E78-14 26.0            
F78-14 26.5            
G78-14 27.1            
H78-14 27.8            
J78-14 28.2            

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15 Bias Ply Tires 

Description 78-series 15" Overall diameter   Description 70-series 15" Overall diameter   Description 60-series 15" Overall diameter
A78-15 24.8   E70-15 26.4   E60-15 25.5
B78-15 25.4.   F70-15 26.9   F60-15 25.9
C78-15 25.8   G70-15 27.5   G60-15 26.4
D78-15 26.2   H70-15 28.1   H60-15 27.1
E78-15 26.6   J70-15 28.4   J60-15 27.4
F78-15 27.2   L70-15 28.9   L60-15 27.9
G78-15 27.7            
H78-15 28.4            
J78-15 28.7            
L78-15 29.3            
               

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TESTED SPEED TIRE RATING

TIRE SPEED RATING MAXIMUM SPEED
J Rating 62 MPH
L Rating 75 MPH
M Rating 81 MPH
P Rating 93 MPH
S Rating 112 MPH
H Rating 130 MPH
V Rating 150 MPH
Z Rating 150 MPH +

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mrtwheels@yahoo.com 

MRW RACING WHEELS BEADLocK ROCKCRAWLER  AND OFF ROAD WHEELS

MANUFACTURERS OF "CUSTOM BUILT" MOTORSPORTS WHEELS SINCE 1955

MARSH RACING WHEELS 

16951 LOGAN CAVE ROAD

SILOAM SPRINGS, ARKANSAS 72761

 Toll Free --- 1-800-643-3625

Local --- 479- 524-4157

FAX --- 479-524-5168

 www.mrt-wheels.com

www.rockcrawler-mrt.com

mrtwheels@yahoo.com 
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