Tyre Size? Affect power on Dyno

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Old May 19, 2008 | 10:47 AM
  #1  
b00stedbyFastrax's Avatar
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Default Tyre Size? Affect power on Dyno

is there a difference in power with a larger tyre size (235x50/15) as compared to a smaller tyre size (225/50/15) on the dyno?
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Old May 19, 2008 | 12:06 PM
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Default Re: Tyre Size? Affect power on Dyno (b00stedbyFastrax)

Tire?
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Old May 19, 2008 | 03:42 PM
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Crx Jimmy's Avatar
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Default Re: Tyre Size? Affect power on Dyno (m R g S r)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">Tire?</TD></TR></TABLE>

he's probably in Europe thats how they spell tire there
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Old May 19, 2008 | 03:44 PM
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Default Re: Tyre Size? Affect power on Dyno (b00stedbyFastrax)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b00stedbyFastrax &raquo;</TD></TR><TR><TD CLASS="quote"> is there a difference in power with a larger tyre size (235x50/15) as compared to a smaller tyre size (225/50/15) on the dyno?</TD></TR></TABLE>

On a dyno with Rollers you would notice a difference with a weight change on rotating mass! I guess it would matter if your going for peak numbers?

Eric
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Old May 19, 2008 | 09:22 PM
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mos
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Default Re: Tyre Size? Affect power on Dyno (rainmanEK)

On a inertia pull the MOI may make a small difference. Probably within normal variation unless its a huge size difference. But it shouldn't matter much. On a steady state reading, not at all.
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