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Tyre size 07 May 2022 14:25 #234861

  • Bimbadeen
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What % speed difference at same eng revs would a change in tyre size from 10.00 x 20 to 9.00 x 20.
Any help much appreciated.

Maurice.

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Tyre size 07 May 2022 14:26 #234863

  • hayseed
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Off the Top of My Head 8-10%..
"Be who you are and say what you feel...
Because those that matter...
don't mind...
And those that mind....
don't matter." -

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Tyre size 07 May 2022 15:17 #234866

  • Lang
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This is handy

spicerparts.com/calculators/engine-rpm-calculator

And this one

tiresize.com/calculator/

Only 37mm difference in height -1018 vs 1055mm. It will only change your engine speed by about 65 rpm at 80kmh. About 3.6% or it will drop your road speed at 80kmh by about 2,5kmh at the same revs. All this is needle width stuff and other factors such as cost, availability and originality probably have more bearing on your choice.

Lang
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Last edit: by Lang.

Tyre size 07 May 2022 19:00 #234878

  • Bimbadeen
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Thanks very much Lang
Maurice

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