Dyno Using Street Slicks Or Stock Wheels?

[Mick63]

correct about lighter wheels, but a larger wheel, even with the same weight has the bulk of the weight further out from the axis so will affect it

[camo86T]

A smaller wheel will make more torque

Torque x rpm = power

[Mick63]

On the road a smaller wheel is like changing diff gears and on some dyno's this may be true re the power number, but not on mainline and torque remains constant if derived torque is used

[velocityxr6t]

correct about lighter wheels, but a larger wheel, even with the same weight has the bulk of the weight further out from the axis so will affect it

I can accept that, as it does take more torque (effort) to move the same weight the greater the distance from the force said weight sits. But, considering a larger rolling diameter, would the tiny amount of wheel speed loss be covered by the fact you travel slightly furthur ever rotation? Speed = distance over time, so if we're adding a bit of time but also adding a bit of distance......

The more you think about it the more situational it becomes.

Also, just like to clarify that small wheels don't make more torque. All wheels make exactly zero torque. They may free up some torque that was consumed moving heavier wheels, giving a net gain and higher reading, but at no point is your engine making more torque.

[Mick63]

which is why derived torque eliminates any associated gearing issues resulting from different rolling heights, gear choice etc

[camo86T]

Also, just like to clarify that small wheels don't make more torque. All wheels make exactly zero torque. They may free up some torque that was consumed moving heavier wheels, giving a net gain and higher reading, but at no point is your engine making more torque.

Correct, wheels themselves don't make torque. But they are a torque multiplier - or in this case a torque reducer.

I guess my point is that with smaller wheels, engine torque won't change a scrap but you will have more torque at your output ie. wheels.

This thread has derailed slightly, sorry OP

[velocityxr6t]

Correct, wheels themselves don't make torque. But they are a torque multiplier - or in this case a torque reducer.

I guess my point is that with smaller wheels, engine torque won't change a scrap but you will have more torque at your output ie. wheels.

This thread has derailed slightly, sorry OP

Yeah, I knew you knew. Just being a stickler and stiring the pot a little. Finding it funny having such a serious discusion about how to get slightly higher dyno readings which mean nothing once you pull the ugly stockers off and bolt the bling back on.

[Ralph Wiggum]

Will the wheel take off?

[Tocchi]

you wheely asked that luke?

[velocityxr6t]

At least he didn't mention pulling off ugly stockers.......