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Old 19th August 2015, 09:58
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Quote:
Originally Posted by smash View Post
Juts for the sake of completeness the 250 SWB originally ran on 185r15 Pirelli Cinturato CA67 tyres - 205/70 was considered the low profile option!I think this means that I should probably choose tyres that will give roughly this diameter on the 18" rims

My Micheldever Tyre Guide says:

OEM CA67 185r15 diameter 675mm 225/45x18 675mm
Nubodi 205/70r15 diameter 668mm 235/40x18 665mm

That probably accounts for the 195/65x15s on my Z300S looking "small" to some people at 655mm. Chosen more to match the diameter of the Z3 255/40x17 and the skinny 5" E-Type Jag rims.
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