tyre sizes and speed ratings

[MCH]

just wondering what the metric equivalent is of the 3.50 - 10 tyre

as i like to run heidenau k61's, but the 3.50 - 10 tyre is only rated to 59J = 243kg load rating and 62mph speed rating, fine with my standard p200 but once its malossified not sure if it will have any effect,

i know other people put cosa rims on and then run is it 100/90 - 10's? not sure

i know heidenau do other metric sizes with a higher speed rating -

100/80 - 10 58M = 81mph

100/90 - 10 61M

or

90/100 - 10 53M

just wondering what it nearest too, im not looking to space the front out and go wider, just what ever is closest to 3.50

cheers

[MCH]

all im guessing is - if the normal tyres are 3.50 - 10

which is 3.5 inch in width, im guessing that the height of the tyre is also 3.5 inch

which would mean if it was a metric size it would be - 87.5/100 - 10

so the nearest would be a 90/100 - 10 tyre?

[LI150]

Without checking my scoot If I have this right 100/90 are the closest to 3.50 x 10. I have some 100/90 yokohamas's on mine and they are slightly wider than 3.50/10 which I like. Why not try some Schwalbe Raceman these are rated up to 93mph and they do them in a 3.50 x 10

[MCH]

i have used k61s for quite a while now, just bought a 120/90 - 10 for the rear, so im not forking out for another set,

will consider the racemans next time though