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SM7 vs SM7.5 Rolling Resistance/Dyno numbers

Started by speedengineer , 05-07-2021 03:13 PM

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4 replies to this topic

#1
speedengineer

Posted 05-07-2021 03:13 PM

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390 posts

Location:Michigan
Car Year:1999
Car Number:84

Has anyone observed a difference in dyno numbers between the SM7 and SM7.5 tires?

It's been a few years since I last dynod my SM, and today it was a few hp lower than it used to be. I am trying to narrow down possible causes, and one of the few differences between the car now and the previous dyno is the tire. Any insight here is appreciated!

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#2
Bench Racer

Posted 05-07-2021 04:35 PM

Different strokes for different folks : )

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5,508 posts

Location:Wauwatosa, WI
Region:Milwaukee
Car Year:1990
Car Number:14

What value is a few HP?

Roller dyno or hub dyno?

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#3
speedengineer

Posted 05-07-2021 04:56 PM

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390 posts

Location:Michigan
Car Year:1999
Car Number:84

Roller dyno, obviously

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#4
Jim Drago

Posted 05-07-2021 05:16 PM

East Street Racing / 2 Time National Champion

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6,567 posts

Location:Memphis, Tn
Region:Mid South
Car Year:2005
Car Number:2

Has anyone observed a difference in dyno numbers between the SM7 and SM7.5 tires?

It's been a few years since I last dynod my SM, and today it was a few hp lower than it used to be. I am trying to narrow down possible causes, and one of the few differences between the car now and the previous dyno is the tire. Any insight here is appreciated!

I have not seen any difference that I could attribute to tires