Circuit, Hillclimb and Sprint

Crossply Slick

ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
COMPOUNDS
13109 7.0/20.5-13 A 7.0" 20.5" 65.0" 8" 8" 8.6" MG4, MG5, MG6
13110 7.0/20.5-13 A 7.0" 20.5" 66.0" 8" 8" 8.6" MG7, MG8
13195 10.0/22.0-13 A 9.0" 22.0" 68.0" 8" 8" 11.2" MG5
13196 10.0/22.5-13 A 10.0" 22.5" 69.0" 8" 8" 11.2" MG5
13205 10.0/23.0-13 A 10.0" 23.0" 70.0" 8" 8" 11.6" MG5
13220 11.5/23.5-13 A 12.0" 23.5" 74.0" 10" 10" 13.5" MG7.3
13240 12.0/23.5-13 A 12.0" 23.5" 74.0" 10-12" 10" 13.5" MG7.3
13246 12.0/23.5-13 A 12.0" 23.5" 74.0" 10" 10" 13.5" MG7.8
13248 12.0/23.5-13 A 12.0" 23.5" 74.0" 10" 10" 13.5" MG8
13206 10.0/23.0-13 A 10.0" 23.0" 71.0" 8" 8" 11.6" MG6

Midget Tarmac compound graph

ITEM NUMBER TIRE SIZE   APPLICATION TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
COMPOUNDS
43101 18.0 X 6.0-10 C2000 F500 6.2" 18.1" 57.0" 6" 6" 8.1" R25B, R35A
43105 18.0 X 7.5-10   F500 7.5" 18.3" 57.5" 8" 8" 9.5" R25B, R35A
43110 19.5 X 6.5-10   F500 6.5" 19.4" 61.0" 6" 6" 8.2" R25B
43120 19.5 X 7.5-10   F500 7.5" 19.5" 61.2" 8" 8" 9.5" R25B
43128 20.5 X 6.0-13 C2000 FF 6.0" 21.0" 66.0" 5.5" 5.5" 7.0" R25A, R35
43129 20.5 X 7.0-13 C2000 FF, DSR 6.75" 20.9" 65.7" 5.5-8.0" 5.5" 7.8" R25A, R35
43130 20.0 X 6.0-13   CF 6.0" 20.7" 65.0" 5.5" 5.5" 7.0" R60
43161 20.0 X 7.5-13 C3000 CSR, DSR 8.0" 20.6" 64.7" 7-9" 8" 9.4" R25B, R35A, R45A
43162 20.5 X 7.0-13 C2500 FC, FM, S2000, DSR 6.75" 20.8" 66.2" 6-8" 6" 8.0" R25B, R35A, R45B
43170 20.0 X 8.0-13   FP, GP, HP, GT4, GT5 8.0" 20.0" 63.0" 5-6" 6" 9.2" R25B, R35A, R45B, R55
43182 20.0 X 9.0-13 C3000 FA, CSR, DSR 9.75" 20.6" 64.7" 8-10" 10" 11.0" R25A, R35A, R45A
43190 20.0 X 9.5-13   GT4 9.4" 20.0" 63.0" 7" 7" 10.5" R25B, R35A, R45A, R55
43240 21.0 X 9.5-13   GT3, GT4 9.5" 21.0" 66.0" 7" 7" 10.5" R60
43260 21.0 X 10.0-13   CSR, DSR 9.5" 21.1" 66.5" 10-11" 10" 11.2" R25B
43270 21.5 X 8.0-13   SCCA-F, SR 8.2" 21.4" 66.8" 8" 8" 9.5" R45A
43275 21.5 X 8.0-13 C3000 PRO F/M 8.2" 21.5" 67.5" 8-10" 8" 9.5" R35A, R45A
43289 22.0 X 8.0-13 C2500 FA, FC, FM, S2000, DSR 8.1" 22.1" 69.2" 8-10" 8" 9.5" R25B, R35A, R45B
43293 22.0 X 9.0-13 C2500 FA, FC, FM, S2000, DSR 8.8" 22.0" 69.5" 8-10" 8" 10.0" R25B, R35A, R45B
43298 22.0 X 10.0-13 C3000 CSR, PRO F/M 9.8" 22.4" 70.5" 11" 10" 11.0" R25, R35, R45A
43301 22.0 X 10.0-13   SCCA-F, SR 9.8" 22.3" 70.0" 10" 10" 11.0" R45A
43302 22.5 X 7.5-13   CF 7.5" 22.4" 70.5" 5.5" 5.5" 9.8" R60
43306 22.5 X 7.2-13 C2000 FF 7.25" 22.6" 71.0" 5.5" 5.5" 9.8" R25B, R35
43318 23.0 X 12.0-13 C3000 FA, CSR 12.0" 23.6" 74.1" 12-15" 15" 15.9" R25B, R35A
43335 21.0 X 5.0-15   FV 5.0" 21.2" 66.5" 4" 4" 5.5" R45B, R55A
43340 21.5 X 5.5-15   FV 5.5" 21.4" 67.0" 4" 4" 6.0" R45B, R55
43351 22.5 X 5.5-15   FV 5.5" 21.9" 69.0" 4" 4" 6.5" R45B, R55A
43361 22.5 X 9.5-15 C3000 FA 9.2" 22.9" 72.0" 10" 10" 10.7" R25A, R35A
43375 23.0 X 8.5-15   EP 8.2" 22.8" 71.5" 6-7" 7" 9.4" R35A, R45B, R55A
43385 23.0 X 9.5-15   EP, GT3 9.2" 22.8" 71.5" 6-7" 7" 10.4" R35A, R45B, R55A
43387 23.5 X 11.0-15 C3000 FA 11.2" 23.7" 74.5" 14" 14" 14.5" R25A, R35
43470 22.0 X 10.0-16   GT2 9.7" 22.9" 72.0" 10-11" 10" 10.7" R35A, R45B
43480 23.5 X 11.5-16   GT2 11.0" 23.8" 75.0" 10-12" 12" 12.5" R35A, R45B
43492 25.0 X 12.0-16   GT1, GT2 12.0" 25.3" 79.5" 10-12" 12" 12.7" R35A, R45B
43497 25.0 X 13.0-16   GT1, GT2 13.0" 25.3" 79.5" 12" 12" 13.5" R45B
43535 27.0 X 14.0-16 C4000 GT1 13.8" 26.7" 84.0" 12-13" 12" 14.5" R35A, R45B

ALL TREAD PATTERNS A

Road racing slicks bias compound graph

ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
COMPOUNDS
10499 26.5/ 8.0-15 A 8.0" 26.8" 84.0" 8" 8" 11.5" 950
10500 26.5/ 8.0-15 A 8.0" 26.8" 84.0" 8" 8" 11.5" 980, 990
10504 27.5/ 8.0-15 A 8.0" 27.3" 86.0" 8" 8" 11.4" 960
10505 27.5/ 8.0-15 A 8.0" 27.3" 86.0" 8" 8" 11.4" 980, 990
10510 10.0/26.5-15 A 10.0" 27.0" 84.8" 10" 10" 13.2" 1080
10515 10.0/27.0-15 A 10.0" 27.5" 86.0" 10" 10" 13.2" 1080
08710 13.0/26.0-15 A 13.0" 26.0" 81.5" 15" 15" 16.4" 1320
08720 13.0/27.0-15 A 13.0" 26.8" 84.0" 15" 15" 16.4" 1330

Crossply Wet

ITEM NUMBER TIRE SIZE TREAD
PATTERN
APPLICATION TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
44125 19.5 X 6.5-10 B F500 6.2" 19.7" 62.0" 6-8" 8" 8.2"
44140 20.0 X 6.5-13 B FF, FM, FC, S2000, DSR 6.2" 20.7" 65.0" 6-7.5" 6" 7.0"
44150 20.0 X 7.5-13 B CSR, FA 7.4" 20.6" 64.6" 7-8" 7" 8.3"
44165 20.0 X 8.0-13 B FP, GP, HP, GT4, GT5 8.0" 20.5" 64.5" 6" 6" 8.8"
44180 20.0 X 9.0-13 B FA, CSR, DSR 9.7" 20.6" 64.8" 10" 10" 10.6"
44185 21.0 X 6.5-13 B FF, FM, FC, S2000, DSR 6.7" 21.2" 66.5" 6-8" 6" 7.2"
44195 21.5 X 7.5-13 B SCCA-F, SR 7.5" 21.4" 66.8" 8.0" 8" 8.8"
44217 22.0 X 9.0-13 B SCCA-F, SR, FC, FA, FM, S2000, DSR, CSR 8.5" 22.9" 71.8" 8.5-10" 8" 10.0"
44220 22.5 X 7.5-13 B FF 7.5" 22.8" 71.5" 5.5-6.0" 5.5" 9.8"
44235 23.0 X 11.5-13 B FA, CSR 11.5" 23.7" 74.5" 14-15" 14" 14.8"
44266 22.5 X 5.0-15 B FV 5.0" 22.0" 69.2" 4" 4" 6.5"
44277 23.0 X 9.0-15 B EP, GT3 8.5" 22.4" 70.5" 6-7" 7" 10.0"

Crossply Treaded

ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
COMPOUNDS
10400 23.0/ 7.0-13 I 7.0" 23.0" 72.2" 6" 6" 8.6" 790
10405 23.0/ 7.0-14 I 7.0" 23.0" 72.2" 6" 6" 8.6" 790
10408 24.0/ 7.0-14 I 7.0" 24.0" 75.0" 6" 6" 9.1" 790
10410 26.5/ 7.0-15 I 7.0" 26.4" 83.0" 6" 6" 9.1" 790
10415 27.0/ 7.0-15 I 7.0" 27.0" 85.0" 6" 6" 9.2" 790
10420 26.5/ 8.0-15 I 8.0" 26.5" 82.1" 8" 8" 10.2" 880, 890
10425 27.5/ 8.0-15 I 8.0" 27.5" 85.3" 8" 8" 10.7" 880, 890

ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM

SECTION
WIDTH

STREET
T.D.
WET
45100 P185/60D-13 I 6.2" 20.6" 64.7" 5-7" 5" 7.0" X  
45110 P205/60D-13 I 6.2" 22.4" 70.5" 5.5-7" 5.5" 7.5" X  
45111DS P205/60D-13* D 6.8" 21.9" 68.8" 5.5-7.5" 5.5" 7.8"   X
45115 P225/45D-13 I 7.8" 20.8" 65.5" 6.5-8.5" 7.5" 9.0" X  
45120 P205/60D-14 I 7.2" 23.0" 72.3" 6-8" 5.5" 8.3" X  
45140 P225/50D-14 I 7.8" 23.0" 72.5" 7-9" 6" 8.8" X  
45160 P225/45D-15 I 7.6" 23.0" 72.5" 6.5-8.5" 7.5" 8.5" X  
45170 P225/50D-15 I 7.0" 24.0" 75.5" 6.5-8.5" 6" 8.5" X  
45180 P225/60D-15 I 8.0" 25.8" 81.0" 7-9" 6" 9.2" X  
45165 P245/45D-15 I 8.5" 24.0" 75.5" 7.5-9.5" 8" 10.0" X  
45190 P245/60D-15 I 8.0" 26.4" 83.0" 7-9.5" 7" 10.0" X  
45200 P275/60D-15 I 9.5" 27.6" 86.5" 8.5-10" 7.5" 11.0" X  

*DS RECOMMENDED FOR WET APPLICATION ONLY.


ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
MODEL
44390 165/70-10 I 5.2" 18.8" 59.0" 5-6" 5.5" 7.3" HOOSIER T.D.
45105 A70-13 I 6.2" 22.4" 70.3" 5-7" 5" 7.5" STREET T.D.
44285 25.5 X 8.5-15 I 8.7" 25.4" 79.7" 8-10" 8" 10.3" HOOSIER T.D.
44295 25.5 X 10.0-15 I 10.0" 25.8" 81.0" 8-11" 8" 11.2" HOOSIER T.D.
44301 26.5 X 7.0-15 I 7.0" 26.4" 83.0" 6" 6" 9.1" HOOSIER T.D.
44305 26.5 X 9.5-15 I 9.5" 26.6" 83.5" 8-10" 8" 11.0" HOOSIER T.D.
44315 27.5 X 11.0-15 I 11.0" 27.7" 87.0" 10-13" 10" 13.2" HOOSIER T.D.
44335 24.0 X 8.5-16 I 8.2" 24.1" 75.4" 8-10" 8" 10.5" HOOSIER T.D.
44345 25.5 X 10.0-16 I 10.0" 25.6" 80.5" 9-11" 9" 11.3" HOOSIER T.D.
44400 5.00-15 D 5.2" 24.7" 77.6" 4-6" 4" 7.0" VINTAGE T.D.
44410 5.50-15 D 6.5" 24.7" 77.6" 4.5-7" 4.5" 7.7" VINTAGE T.D.
*46010 P185/65R15 V 6.0" 24.2" 76.0" 5.0-6.5" 5" 7.6" SPEEDSTER
*46015 P205/60R15 V 7.0" 24.2" 76.0" 5.5-7.5" 6.5" 8.5" SPEEDSTER
*46020 P225/50R15 V 8.1" 24.2" 76.0" 6-8" 7" 9.125" SPEEDSTER

*NEW TREAD PATTERN.

Radial Slick

ITEM NUMBER TIRE SIZE TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.

CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
A6 AUTO
CROSS
A6 ROAD
RACE
46300 P185/60ZR13 M 6.9" 21.7" 68.2" 6-7" 6.0" 7.8"   X
46305 P205/60ZR13 M 8.0" 22.8" 71.7" 5.5-7.5" 6.0" 8.8"   X
46307 P225/45ZR13 M 8.5" 20.9" 65.8" 7.0-8.5" 7.5" 9.3" X X
46310 P225/50ZR13 M 8.5" 21.9" 69.0" 6-8" 7.0" 9.4" X X
46405 P205/55ZR14 M 8.1" 22.8" 71.6" 5.5-7.5" 7.0" 9.1" X X
46410 P205/60ZR14 M 7.8" 23.6" 74.2" 7-8" 6.0" 8.2"   X
46415 P225/50ZR14 M 8.8" 22.9" 72.0" 6-8" 7.0" 9.4" X X
46500 P205/50ZR15 M 8.0" 22.8" 71.7" 5.5-7.5" 6.5" 8.7" X X
46505 P215/60ZR15 M 8.3" 25.2" 79.1" 6.0-7.5" 7.0" 9.2"   X
46510 P225/45ZR15 M 8.8" 22.9" 72.0" 7.0-8.5" 7.5" 9.8" X X
46515 P225/50ZR15 M 8.8" 23.8" 74.8" 6-8" 7.0" 9.8"   X
46520 P225/55ZR15 M 8.7" 24.8" 78.0" 6-8" 7.0" 9.6"   X
46525 P245/50ZR15 M 9.2" 24.8" 78.0" 7.0-8.5" 7.5" 10.1"   X
46535 P275/35ZR15 M 10.1" 23.0" 72.2" 9.0-11.0" 9.5" 10.8" X
46540 P275/50ZR15 M 10.0" 25.5" 80.0" 7.5-9.5" 8.0" 10.8"   X
46600 P205/45ZR16 M 8.0" 22.8" 71.7" 6.5-7.5" 7.0" 8.7" X X
46610 P225/50ZR16 M 9.0" 24.7" 77.6" 6-8" 7.0" 9.5" X X
46615 P245/45ZR16 M 9.2" 24.7" 77.7" 7.5-9.0" 8.0" 10.1" X X
46620 P255/50ZR16 M 9.8" 26.2" 82.2" 7-9" 8.0" 10.5" X X
46630 P275/45ZR16 M 10.3" 25.6" 80.5" 8.5-10.0" 9.0" 11.2" X X
46700 P205/40ZR17 M 7.0" 23.8" 74.8" 7-8" 8.0" 8.5"   X
46705 P225/40ZR17 M 8.9" 23.8" 74.5" 7-9" 7.5" 9.8" X X
46710 P225/45ZR17 M 8.8" 24.7" 77.7" 7.0-8.5" 7.5" 9.7" X X
46715 P245/40ZR17 M 9.3" 24.5" 77.0" 8.0-9.5" 8.5" 10.0" X X
46720 P245/45ZR17 M 9.4" 25.7" 80.7" 7.5-9.0" 8.0" 9.9"   X
46725 P255/45ZR17 M 9.8" 26.2" 82.2" 8.0-9.5" 9.0" 10.8" X X
46730 P275/40ZR17 M 10.3" 25.5" 80.1" 9.0-11.0" 9.5" 11.0" X X
46733 P295/35ZR17 M 10.8" 25.3" 79.5" 9.5-11.0" 10.0" 11.6" X X
46735 P315/35ZR17 M 11.6" 25.6" 80.4" 11-12" 11.0" 12.6" X X
46740 P335/35ZR17 M 12.9" 25.6" 80.5" 11-13" 12.0" 13.6" X X
46810 P225/40ZR18 M 8.8" 24.8" 77.8" 7.5-9.0" 8.0" 9.5" X X
46820 P245/35ZR18 M 9.1" 24.7" 77.7" 8.0-9.5" 8.5" 9.8" X X
46825 P245/40ZR18 M 9.3" 25.7" 80.6" 8.0-9.5" 8.5" 10.5" X X
46830 P255/40ZR18 M 9.8" 26.2" 82.1" 8.5-10.0" 9.0" 10.6"   X
46835 P275/35ZR18 M 10.3" 25.5" 80.2" 9-11" 9.5" 10.7" X X
46840 P285/30ZR18 M 10.9" 24.9" 78.1" 10-11" 10.0" 11.5" X X
46843 P295/30ZR18 M 10.8" 25.3" 79.5" 9.5-11" 10.0" 11.6" X X
46846 P315/30ZR18 M 11.6" 25.6" 80.5" 11-12" 11.0" 12.5" X X
46850 P335/30ZR18 M 12.9" 25.6" 80.5" 12-13" 12.0" 13.5" X X
46855 P345/35ZR18 M 12.8" 26.8" 84.3" 11-13" 12.0" 13.9" X X
46915 P235/35ZR19 M 9.25" 25.6" 80.5" 8.0-9.5" 9.0" 10.2" X X
46925 P265/35ZR19 M 9.6" 26.1" 82.3" 9-10" 9.0" 10.4" X X
46935 P295/30ZR19 M 10.4" 26.1" 82.1" 10-12" 10.0" 11.5" X X
46940 P315/40ZR19 M 11.3" 28.9" 90.7" 11-12" 11.0" 12.9" X X
46945 P325/30ZR19 M 12.2" 26.8" 84.1" 12-13" 13.0" 13.6" X X
46950 P345/30ZR19 M 12.9" 26.8" 84.3" 12-13" 13.0" 14.1" X X

NOTE: Z Speed Rating = above 149 mph/240 km/h. Consult Hoosier Racing Tire for maximum speed.

ITEM NUMBER TIRE SIZE   APPLICATION TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
COMPOUNDS
43570 23.0 X 9.5R-15   FA 9.4" 22.9" 72.0" 10" 10" 10.7" R25B, R35A
43585 23.5 X 13.0R-15   FA 13.0" 23.5" 73.8" 14" 14" 14.3" R25B, R35A
43655 23.5 X 11.0R-16   GT2 10.6" 23.6" 74.0" 10" 10" 11.0" R35A
43660 23.5 X 12.0R-16   GT2 12.1" 23.5" 73.8" 12" 12" 13.0" R25B, R35A
43665 25.5 X 12.0R-16   GT2 12.4" 25.6" 80.5" 12" 12" 13.5" R35A
43671 25.5 X 12.5R-16 C2000 GT1 12.4" 25.8" 81.0" 12" 12" 13.3" R35A, R45B
43676 25.5 X 14.0R-16 C2000 GT1 13.6" 25.7" 80.9" 12" 12" 14.1" R25B, R35A, R45B
43681 27.0 X 13.0R-16 C2000 GT1 13.0" 27.3" 85.8" 13" 13" 14.6" R35A, R45B
43691 28.0 X 14.0R-16 C2000 GT1 13.9" 28.2" 88.5" 13" 13" 15.1" R25B, R35A, R45B

ALL TREAD PATTERNS A

Road racing slicks radial compound graph

Radial Wet

ITEM NUMBER TIRE SIZE SPEED
RATING
TREAD
PATTERN
TREAD
WIDTH
APP.
DIA.

CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
46105 P205/60R13 86H C 7.1" 23.5" 73.8" 6-7.5" 6.0" 8.5"
46115 P205/55R14 85H C 7.1" 23.5" 73.8" 6.5-7.5" 6.5" 8.7"
46125 P205/50R15 84H C 7.1" 23.5" 73.8" 6.5-7.5" 6.5" 8.2"
46130 P225/55R15 92H C 8.8" 24.8" 77.9" 7-8" 7.0" 9.4"
46135 P205/45R16 77H C 7.1" 23.5" 73.8" 7-7.5" 7.0" 8.4"
46140 P225/50R16 91H C 8.8" 24.8" 77.9" 7-9" 7.0" 9.6"
46145 P245/45R16 88H C 9.0" 24.8" 77.9" 7-9" 8.0" 10"
46150 P255/50R16 99H C 9.3" 26.3" 82.5" 8-9" 8.0" 10.7"
46170 P225/45R17 84H C 8.8" 24.8" 77.9" 8-9" 7.5" 9.5"
46175 P245/40R17 86H C 9.0" 24.8" 77.9" 7-9" 8.0" 10"
46177 P245/45R17 89H C 9.0" 25.5" 80.1" 7-9" 8.0" 10"
46180 P255/45R17 92H C 9.3" 26.3" 82.5" 8.5-9.5" 8.5" 10.5"
46185 P275/40R17 93H C 10.0" 25.2" 79.2" 9-11" 9.5" 11.3"
46190 P315/35R17 93H C 11.8" 25.6" 80.4" 11-12" 11" 12.7"
46200 P225/40R18 83H C 8.8" 24.8" 77.9" 7-9" 8" 9.9"
46205 P245/35R18 80H C 9.0" 24.8" 77.9" 7-9" 8" 10"
46210 P255/40R18 90H C 9.3" 26.3" 83.0" 9-10" 9.0" 10.5"
46215 P275/35R18 87H C 10.0" 25.2" 79.2" 10-11" 9.5" 11.3"
46220 P305/30R18 89H C 11.8" 25.6" 80.4" 11-12" 11" 12.7"

NOTE: H Speed Rating = 130 mph/210 km/h.


ITEM NUMBER TIRE SIZE TREAD
PATTERN
APPLICATION TREAD
WIDTH
APP.
DIA.
APP.
CIRC.
RECOM.
RIM
RIM SECTION
WIDTH
44450 23.0 X 9.5R-13 W FA 9.5" 23.0" 72.4" 10" 10" 10.6"
44460 23.5 X 12.0R-13 W FA 11.9" 23.5" 73.8" 14" 13" 14.0"
44590 23.0 X 9.5R-15 W FA 9.5" 23.0" 72.4" 10" 10" 10.6"
44595 23.5 X 12.0R-15 W FA 11.9" 23.5" 73.8" 14" 14" 14.0"
44655 23.5 X 11.0R-16 W GT2 10.6" 23.6" 74.0" 10" 10" 11.0"
44670 25.5 X 12.5R-16 W GT1, GT2 12.2" 25.7" 80.9" 12" 12" 13.2"
44680 27.0 X 13.0R-16 W GT1 13.6" 27.3" 85.7" 12" 12" 14.2"

TREAD PATTERN IS HAND GROOVED.