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Tire Conversions And Load Ratings

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Tire Conversions And Load Ratings
Tire Conversions And Load Ratings
SPEED
SYMBOLS
SPEED
(km/h)
SPEED
(mph)
A1 5 2.5
A2 10 5
A3 15 10
A4 20 12.5
A5 25 15
A6 30 20
A7 35 22.5
A8 40 25
B 50 30
C 60 35
D 65 40
E 70 43
F 80 50
G 90 55
SPEED SYMBOLS
The speed symbol determines
the maximum speed allowed for
the rated loads of the tire. From
the table above, A8 means the
maximum speed allowed for the
rated load of the tire is 40 km/h
or 25 mph.
NEAREST
CONVENTIONAL
TIRE SIZE
METRIC
TIRE SIZE
14.9R28 380/85R28
14.9R30 380/85R30
14.9R34 380/85R34
14.9R46 380/90R46
16.9R28 420/85R28
16.9R30 420/90R30
18.4R34 480/85R34
18.4R38 480/80R38
18.4R42 480/80R42
18.4R46 480/80R46
20.8R38 520/85R38
20.8R42 520/85R42
EQUIVALENT LOAD DESIGNATIONS
SIZE SYMBOL PLY RATING LOAD INDEX
13.6R28
H H H
8PR 126 A8/B
14.9R28
H H H
10PR 133 A8/B
14.9R30
H H H
10PR 134 A8/B
14.9R34
H H H
10PR 136 A8/B
14.9R46
H H H
10PR 142 A8/B
16.9R24
H H
8 & 10PR 134 A8/B
16.9R26
H H
8 & 10PR 135 A8/B
16.9R28
H H
8 & 10PR 136 A8/B
16.9R30
H H
8 & 10PR 137 A8/B
16.9R38
H
8PR 141 A8/B
18.4R26
H H
8 & 10PR 140 A8/B
18.4R34
H
6 & 8PR 139 A8/B
18.4R38
H
6 & 8PR 141 A8/B
18.4R38
H H
10PR 146 A8/B
18.4R42
H H
10PR 148 A8/B
18.4R46
H H H
12PR 155 A8/B
20.8R34
H
8PR 145 A8/B
20.8R38
H
8PR 147 A8/B
20.8R38
H H
10PR 153 A8/B
20.8R42
H H
10PR 155 A8/B
24.5R32
H
10PR 154 A8/B
STAR RATINGS
All conventional sized radials for agricultural applications are marked
with the star ratings. This specifies the maximum load rating for
the designated inflation pressure.
H
Max load @ 18 psi
H H
Max load @ 24 psi
H H H
Max load @ 30 psi
INDUSTRY CODES
F-1 Agricultural single-rib tread
F-2 Agricultural multi-rib tread
F-2D Agricultural dual rib
F-2M Agricultural multi-rib tread
F-3 Industrial multi-rib tread
R-1 Drive wheel — Regular tread (dry, well-drained soil)
R-1W
Drive wheel — Wet traction tread (wet soil); generally 25%
deeper tread than R-1
R-2 Drive wheel — Rice and cane (wet, muck)
R-3
Drive wheel — “Button design” (orchards, golf courses,
grass cutting, light industrial)
R-4 Drive wheel — Industrial use
1.800.USA-BEAR | www.titan-intl.
com
Titan Tire Corporation 2345 East Market Street Des Moines, Iowa 50317
TIRE CONVERSIONS AND LOAD RATINGS
NEAREST INCH
TIRE WIDTH
METRIC
TIRE WIDTH
9.0 230
9.5 240
10.0 250
10.0 260
11.2 290
12.4 320
13.6 340
14.9 380
15.5 400
16.9 420
16.9 430
16.9 440
18.4 480
20.8 520
20.8 525
23.1 580
23.1 600
24.5 620
24.5 650
28.0 710
30.5 800
35.5 900
43.3 1100
Tire Conversions And Load Ratings
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