Will larger diameter rims increase tire breakaway

[rphill12]

My question is this:

Say you have a 17 inch rim on your car and the standard tire (let's say total wheel diameter is 22 inches) that comes with it.

If you now take a 20 inch rim with a tire that increases the overall wheel diameter (lets say total wheel diameter is now 25 inches) but doesn't change the tire width at all, will this cause the wheels to lose traction during acceleration easier since you now have a larger velocity at the radius of the wheel (25 inches / 2 = 12.5 inch radius)?

The torque of the car will be increased as well since you're adding a larger diameter wheel, so if the two tires are made of the same compound and have the same width, then wouldn't that mean with an increase in torque and wheel velocity at the tire edge, it would breakaway easier and make your tires overcome the friction?

 

[patprimmer]

As the torque is limited by the engine ability, the larger rolling dia is effectively higher gearing therefore reducing force at the tyre road interface.

Regards

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[kenre]

Also a larger overall Diameter will lengthen the contact patch very slightly.

http://www.retallickeng.com.au

Was told it couldnt be done, so
i went and did it!

 

[digger200]

It will also put more stain on the brakes, bearings & axle stub

 

[digger200]

forget brakes in last post

 

[NormPeterson]

If anything, the increased moment of inertia would make it a tiny bit less likely that you'd get wheelspin.


Norm

 

[thruthefence]

Think of the brain power that went into this:

http://www.youtube.com/watch?v=jyWICxXoe4A