GT & Sportscar
| Size |
Overall Width Category (F = Front / R = Rear) |
Design Rim Width |
Diameter |
Overall Width |
Tread Width |
| |
12" |
14" |
16" |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
| 210/640R18 |
F 7.5-9 |
|
|
8 |
640 |
25.2 |
223 |
8.8 |
203 |
8 |
| 235/640R18 |
F 8.5-10 |
|
|
9 |
640 |
25.2 |
248 |
9.8 |
228 |
9 |
| 250/640R18 |
F 9-10.5 |
|
|
9.5 |
640 |
25.2 |
257 |
10.1 |
240 |
9.5 |
| 260/640R18 |
F 9.5 - 11 |
|
|
10 |
641 |
25.2 |
270 |
10.6 |
252 |
9.9 |
| 285/650R18 |
F 10.5-11 |
F 11-12 |
|
11.5 |
644 |
25.4 |
306 |
12.0 |
284 |
11.2 |
| 300/650R18 |
|
F 11.5 - 12.5 |
|
12 |
645 |
25.4 |
320 |
12.6 |
301 |
11.9 |
| 265/660R18 |
F 10-11 |
|
|
10 |
655 |
25.9 |
278 |
10.9 |
252 |
9.9 |
| 280/660R18 |
F 10.5-11 |
F 11-12 |
|
11 |
658 |
25.9 |
304 |
12 |
274 |
10.8 |
| 285/660R18 |
|
F 10.5 -11.5 |
|
11 |
655 |
25.8 |
301 |
11.9 |
277 |
10.9 |
| 300/660R18 |
|
F+R 12-12.5 |
|
12.5 |
656 |
25.8 |
321 |
12.6 |
290 |
11.4 |
| 340/660R18 |
|
|
F 13-14 |
13.5 |
656 |
25.9 |
355 |
14 |
324 |
12.8 |
| 285/680R18 |
R 10.5-11 |
|
|
11 |
679 |
26.7 |
302 |
11.9 |
270 |
10.6 |
| 290/680R18 |
R 10.5-11 |
|
|
11 |
680 |
26.8 |
302 |
11.9 |
281 |
11.1 |
| 330/680R18 |
|
|
|
|
|
|
|
|
|
|
| 270/710R18 |
R10.5-11 |
|
|
11 |
708 |
27.9 |
299 |
11.8 |
258 |
10.2 |
| 275/710R18 |
|
|
|
|
|
|
|
|
|
|
| 310/710R18 |
|
R 12.5-13 |
|
13 |
711 |
28 |
354 |
13.9 |
305 |
12 |
| 315/690R18 |
|
R 12.5-13 |
|
13 |
691 |
27.2 |
351 |
13.8 |
307.5 |
12.1 |
| 360/710R18 |
|
|
R 14.5-15 |
14.5 |
|
|
|
|
|
|
| 360/725R18 |
|
|
R 14.5-15 |
14.5 |
720 |
28.3 |
402 |
15.8 |
360 |
14.2 |
Other GT (not category specific)
| Size |
Construction |
Pattern |
Permitted Rim Width |
Optimum Rim Width |
Diameter |
Overall Width |
Tread Width |
Revs Per Mile |
| |
|
|
inch |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
@100 mph |
| 205/620R17 |
|
|
7.0-9.0 |
7.5 |
616 |
24.3 |
215 |
8.5 |
203 |
8 |
822 |
| 210/620R17 |
|
|
7.0-9.0 |
8 |
620 |
24.4 |
223 |
8.8 |
210 |
8.3 |
826 |
| 235/620R17 |
|
|
8.5-9.5 |
9 |
620 |
24.4 |
248 |
9.8 |
235 |
9.3 |
826 |
| 265/630R17 |
|
|
9.5-10.5 |
10 |
636 |
25 |
280 |
11 |
260 |
10.2 |
805 |
| 290/645R17 |
|
|
12.0-13.0 |
12 |
642 |
25.3 |
328 |
12.9 |
286 |
11.3 |
794 |
| 305/630R17 |
|
|
12-13.5 |
13 |
629 |
24.8 |
340 |
13.4 |
300 |
11.8 |
815 |
| 210/650R18 |
|
|
8.0-9.0 |
8.2 |
649 |
25.6 |
227 |
8.9 |
210 |
8.3 |
789 |
| 210/645R19 |
|
|
|
8 |
642 |
25.3 |
225 |
9.9 |
210 |
8.3 |
794 |
| 285/680R19 |
|
|
|
10.5 |
680 |
26.8 |
293 |
11.5 |
270 |
10.6 |
674 |
Single Seater
| Size |
Construction |
Pattern |
Permitted Rim Width |
Optimum Rim Width |
Diameter |
Overall Width |
Tread Width |
Revs Per Mile |
| |
|
|
inch |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
@100mph |
| 140/535R13 |
S04/S04W |
slick/wet |
5.5-7.0 |
5.5 |
535 |
21.1 |
169 |
6.7 |
140 |
5.5 |
957 |
| 160/535R13 |
S04/S04W |
slick/wet |
6.0-8.0 |
6.5 |
537 |
21.1 |
189 |
7.4 |
160 |
6.3 |
826 |
| 175/535R13 |
S04/S04W |
slick/wet |
6.0-8.0 |
7.5 |
539 |
21.2 |
206 |
8.1 |
175 |
6.9 |
950 |
| 190/535R13 |
S04/S04W |
slick/wet |
7.5-9.5 |
8 |
541 |
21.3 |
221 |
8.7 |
190 |
7.4 |
946 |
| 190/535R13 |
S04/S04W |
slick/wet |
5.5-7.0 |
5.5 |
571 |
22.5 |
209 |
8.2 |
170 |
6.7 |
882 |
| 205/570R13 |
S04/S04W |
slick/wet |
8.0-9.5 |
9 |
574 |
22.6 |
255 |
10 |
205 |
8.1 |
892 |
| 230/570R13 |
S04/S04W |
slick/wet |
9.5-10.5 |
10 |
575 |
22.6 |
280 |
11.2 |
235 |
9.2 |
890 |
| 230/535R13* |
S04/S04W |
slick/wet |
9.5-10.5 |
10 |
541 |
21.3 |
262 |
10.3 |
231 |
9.1 |
946 |
| 280/570R13* |
S04/S04W |
slick/wet |
11.5-12.5 |
12 |
575 |
22.6 |
335 |
13.2 |
285 |
11.2 |
890 |
Miscellaneous
| Size |
Construction |
Pattern |
Permitted Rim Width |
Optimum Rim Width |
Diameter |
Overall Width |
Tread Width |
Revs Per Mile |
| |
|
|
inch |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
@100mph |
| 160/490-10 |
D15 /D42 |
slick/wet |
5.0-7.0 |
6 |
480 |
18.9 |
214 |
8.4 |
150 |
5.9 |
1067 |
| 180/490-10* |
D15 /D42 |
slick/wet |
6.0-8.0 |
7 |
485 |
19.1 |
230 |
9 |
170 |
6.7 |
1067 |
| 170/510-13 |
Clubmans |
slick/wet |
7.0-9.0 |
8 |
516 |
20.3 |
222 |
8.7 |
165 |
6.5 |
992 |
| 210/570-13 |
Clubmans |
slick/wet |
7.0-11.0 |
10 |
564 |
22.2 |
283 |
11.1 |
210 |
8.3 |
908 |
| 160/490-13 |
D104 |
slick/wet |
4.5-7.5 |
6 |
492 |
19.4 |
188 |
7.4 |
156 |
6.1 |
1041 |
| 180/490-13 |
D104 |
slick/wet |
5.5-8.0 |
8 |
497 |
19.6 |
222 |
8.7 |
179 |
7.1 |
1030 |
| 215/525-13* |
D104 |
slick |
9.0-11.0 |
10 |
525 |
20.7 |
270 |
10.6 |
215 |
8.5 |
975 |
| 240/525-13* |
D104 |
slick |
10.0-12.0 |
11 |
531 |
20.9 |
274 |
10.8 |
234 |
9.2 |
967 |
| 210/600-16* |
D104A |
slick |
7.5-9.5 |
8.5 |
600 |
23.6 |
255 |
10 |
215 |
8.5 |
854 |
| 275/600-16* |
D104 |
slick/wet |
9.0-12.0 |
10 |
610 |
24 |
319 |
12.6 |
284 |
11.2 |
839 |
| 290/600-16* |
D104 |
slick/wet |
10.5-12.5 |
12 |
599 |
23.6 |
328 |
12.9 |
285 |
11.2 |
855 |
| 305/600-13* |
D104 |
slick |
12.5-14.0 |
13.5 |
607 |
23.9 |
402 |
15.8 |
305 |
12 |
845 |
| 310/625-16* |
D104 |
slick/wet |
11.0-14.0 |
12 |
620 |
24.4 |
343 |
13.5 |
310 |
12.2 |
826 |
| 350/650-16* |
D104 |
slick |
14.0-15.0 |
15 |
648 |
25.5 |
408 |
16.1 |
354 |
13.9 |
791 |
| 140/535R13* |
S06 |
CR301 |
5.5-7.0 |
5.5 |
535 |
21.1 |
169 |
6.7 |
140 |
5.5 |
957 |
| 160/535R13* |
S06 |
CR301 |
6.0-8.0 |
6.5 |
537 |
21.1 |
189 |
7.4 |
160 |
6.3 |
826 |
| 170/575R13* |
S06 |
CR298 |
5.5-7.0 |
5.5 |
571 |
22.5 |
209 |
8.2 |
170 |
6.7 |
882 |