Saloon car - radial including group N

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
165/505R13 A8D/A8W slick/wet 5.0-7.0 6 506 19.9 179 7 160 6.3 1012
175/555R14 A46D/A22W slick/wet 5.5-7.5 6 557 22 194 7.6 175 6.9 919
175/555R15 A46D/A22W slick/wet 5.5-7.5 7 559 22 191 7.5 173 6.8 916
185/555R15 A46D/A22W slick/wet 6.0-8.0 7.5 559 22 204 8 186 7.3 916
185/580R15 A46D/A22W slick/wet 6.5-7.5 7 583 23 205 8.1 185 7.3 878
200/580R15 A46D/A22W slick/wet 6.5-8.5 7.5 583 23 216 8.5 195 7.7 878
200/580R16 A46D/A22W slick/wet 6.5-8.5 7.5 583 23 216 8.5 195 7.7 878
210/605R16 A46D/A22W slick/wet 6.5-8.5 8 607 23.9 223 8.8 212 8.3 842
235/605R16 A46D/A22W slick/wet 8.0-9.5 8 608 23.9 239 9.4 233 9.2 842
265/630R16 A46D/A22W slick/wet 9.5-10.5 10 633 24.9 278 10.9 260 10.2 809
Touring car
235/610R17 C63D /A46D slick/wet 8.5-9.5 9 608 23.9 245 9.7 226 8.9 855
212/650R19 B52D/B52W slick/wet 7.5-8.5 8.2 646 25.4 227 8.9 210 8.3 789

Saloon car - crossply including group N

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
160/490-13 D105 slick 4.5-7.5 6 492 19.4 188 7.4 156 6.1 1041
180/490-13 D105 slick 5.5-8.0 8 497 19.6 222 8.7 179 7.1 1030
165/525-14 D106A slick 5.0-6.0 5.5 513 20.2 186 7.3 165 6.5 998
175/525-14 D106A slick 6.0-7.0 6.5 513 20.2 198 7.8 180 7.1 997
165/555-14 D105 slick 5.5-7.0 6 552 21.7 189 7.5 168 6.6 927
185/555-14 D105 slick 5.5-8.0 7 557 21.9 193 7.6 186 7.3 921
175/555-15 D104 slick 5.5-6.5 5.5 560 22.1 180 7.1 175 6.9 914
185/555-15 D104 slick 6.0-7.0 6 560 22.1 190 7.5 185 7.3 914
205/555-15 D104 slick 7.0-8.0 7 550 21.7 212 8.4 204 8 931
195/565-15 D105 slick 6.0-6.5 6 564 22.2 202 8 194 7.6 908
175/570-15 D104 slick 5.5-7.5 6.5 570 22.4 203 8 172 6.8 899
185/570-15 D105 slick 6.0-8.0 7 570 22.4 211 8.3 182 7.2 899
200/580-15 D105 slick 6.0-8.0 7 580 22.8 213 8.4 194 7.6 883
225/580-15 D105 slick 7.0-9.0 8 580 22.8 238 9.4 219 8.6 883
205/580-16 D105 slick 6.0-8.0 7 580 22.8 215 8.5 205 8 879
225/580-16 D105 slick 7.0-9.0 8 583 22.9 241 9.5 225 8.9 879
200/600-16 D104A slick 7.0-9.0 8 595 23.4 242 9.5 200 7.8 872
200/605-17 D104 slick 6.0-8.0 7 607 23.9 211 8.3 194 7.6 845
225/605-17 D104 slick 7.0-9.0 8 609 24 230 9.1 220 8.7 844
240/605-17 D104 slick 8.0-9.5 8.5 610 24 251 9.9 230 9.1 839