Yokohama Tyres

Adams and Page are one of the largest stockists of yokohama tyres in the country.We  have been a leading supplier of yokohama for over ten years now, and we travel regularly throughout England and the continent providing race support for competitors wishing to get the best out of their tyres. Les Adams first started racing an Austin Healey 3000 in 1960, our knowledge and expertise is based on 50 years racing experience.

Yokohama A048R Tyres

We have supported the Classic Sports Car Club since it was formed 8 years ago. These are the most popular tyre for circuit racer, used by club and professional competitor alike.

The Yokohama A048 Tyre has a stiffened carcass, which combined with the tread pattern and compound makes it one of the best road legal race tyres in the market today.  It is listed in the MSA blue book as a 1b tyre.

The operating temperature for the tyre tread compound is between 45C and 120C. The optimum temperature is 65-95C. When using a pyrometer, and measuring the temperature of the tyre, start by taking the hardest worked tyre first and the inside measurement first.  (The inside edge of the tyre should be the most worked, so it is important to get an accurate reading to make sure that the tyre is operating within its parameters).

Temperatures across the tread ideally should vary by no more than 15C from inside to outside when possible.

PRESSURES

Basic guideline settings are given below;

For “M” compound tyres maximum hot tyre pressures should be between 28 and 32 psi.

For “MH” compound tyres maximum tyre pressures should be between 28 and 36 psi.

These are guide line settings only, and can vary for different weight cars.

A 450kg Caterham will have different settings to that of a Jaguar weighing 1000 kilos more. If in doubt please ask.

CAMBER

Although the tyre will work with camber angles of up to 5 degrees negative, the optimum camber angle is 1-2.5 negative if springs and roll stiffness are correct.

The 048 is available in the following sizes.

Size Compound Rim
Size

Rim
Permitted

Inch MM Inch
Diameter
MM
Diameter
Circum
165/55R12 M 5 4.5-6 6.4 162 19.1 486 1487
175/50R13 M, S 5.5 5.5-6 7.1 180 19.9 505 1545
175/60R13 M, S 5 5-6J 7.1 180 21.1 536 1634
185/60R13 M, S 5.5 5-6.5  7.4 188 21.7 550 1677
205/60R13 M, S 6 5.5-6.5 8.3 210 22.6 573 1747
185/55R14 M, S 6 5-6.5 7.8 197 21.9 557 1699
185/60R14 M, S 5.5 5-6.5 7.4 189 22.6 575 1760
195/60R14 M 6 5.5-7 7.9 201 23 585 1783
195/50R15 M, S 6 5.5-7 8 202 22.6 574 1749
195/55R15 M, S 6 5.5-7 8 202 23.3 593 1814
205/50R15 M 6.5 5.5-7.5 8.4 214 23.7 585 1783
205/60R15 M 6 5.5-7.5 8.2 208 24.6 625 1905
225/50R15 M 7 6-8J 9.3 235 23.7 603 1845
195/50R16 M 6 5.5-7 8 203 23.6 600 1928
205/55R16 M, MH 6.5 5.5-7.5 8.4 213 24.8 632 1921
225/45R16 M, MH 7.5 7-8.5 9 228 23.8 605 1842
225/50R16 M, MH 7 6-8J 9.1 231 24.9 632 1928
215/45R17 M, MH 7 7-8J 8.4 212 24.6 625 1905
225/45R17 M, MH 7.5 7-8.5 9 228 24.8 630 1921
235/45R17 M 8 7.5-9 9.4 238 24.8 640 1952
235/45R17 MH 8 7.5-9 9.4 238 24.8 640 1952
245/40R17 MH 8.5 8-9.5 9.8 248 24.8 630 1921
255/40R17 MH 9 8.5-10 10.3 262 25.1 638 1945
225/40R18 MH 8 7.5-9 9.1 232 25 635 1936
235/40R18 MH 8.5 8-9.5 9.6 243 25.4 644 1967
265/35R18 MH 9.5 9-10.5 10.7 271 25.2 640 1952
285/30R18 MH 10 9.5-10.5 11.4 290 24.8 629 1918
295/30R18 MH 10.5 10-11J 11.6 295 24.9 633 1928
315/30R18 MH 11 10.5-11.5 12.3 313 25.4 645 1967 

Please contact us for price and availability.We fit for free at the circuits we visit, or send tyres by mail order to all parts of the country.

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