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Tyres

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toucheturtle:
My CB500 was fitted with Avon Roadrunners rear-120/90-18 and front 100/90-19. I changed the rear for a Roadrider 120/90-18 without checking what the recommended fit was. It's now time to replace the front. The handling has always been fine so am wondering whether to go for the Roadrider 100/90-19. The recommend is 3.25x19" which is avaliable as an AM26 but not sure how much difference there is between the two tyres. It seems the AM26s are slightly smaller than the older AM20s, can anyone confirm this?

Johnwebley:
I use the Avons,

  3.25 x 19 front

  4.00 x 18 rear

  run them at 27 front,and 32 rear,

  they always feel great for me,last time I used Dunlops,but they didn't give me the same confidence,


   don't fit over wide tyres,,3.25/90 front is wide enough,and 4,00/100 rear is bigger than standard,but work well

toucheturtle:
How much difference is there between a 100/90-19 and a 3.25x19"?

SteveD CB500K0:
100mm is 3.94"


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SteveD CB500K0:
A 90/90 would be closer (3.25 = 82.6mm)


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