Hi guys,

I'm not sure.. is this normal because of the width of the wheels? or width of the tires? or is it the wheels size?

I have installed days ago VOLK GT30 + Nitto Invo. The sepcs of them are:

VOLK GT30 / Nitto Invo:
Front 20x9.5 / 245/35ZR20
Rear: 20X10.5 / 285/30ZR20

now is it because the tires are heavy? or they normally the 285 are really heavy? or is it because they are Nitto!

What if I go for Yokohama ADVAN front: 245/35ZR20 rear: 265/35ZR20 will the acceleration be back as it was or is it just the same!

 

Maybe you just need to step on the gas more

I have 20's too with same size tires as you just Falkens, and I really didnt notice any difference in acceleration to be honest.

 

many of us are running the same wheels here in the same width, including myself. These are not heavy wheels, very comparable to stock actually. and the tires you are running are pretty sticky so you should notice an improvement in traction if anything.

maybe it's just in your head? should be no reason for slower acceleration

 

Everyone focuses on raw weight. Moment of inertia is what really matters.

The 20's have more inertia than 19's, and wider tires only compound on that.

Yes, the 19's are heavier, but when combined with wider (heavier) tires, the 20's will sap more power.

 

So your saying 20's you will get more power because of the wider tires?

 

inertia is resistance to movement. It saps power, meaning, you put less to the ground.

 

Got it...

If I put on 265/35/20 in the back will there be any changes?

 

But thinking about it Mike, your overall diameter is still fixed so your rolling inertia isn't changing much is it?

 

Think of the physics demonstration.

Two objects, of equal diameter and equal weight. Both are the same thickness, and diameter. The difference is, one is solid disk of equal density throughout the disk, and the other is a ring.

If you put them on a slope, which will roll down faster? Equal mass, equal shape, but different inertia.

 

I must be very bored.

http://www.youtube.com/watch?v=gO2CRb8FHLA

 

Haha thanks for sharing bro!

 

You dissapoint me Sam.

 

I had nearly the exact same setup (except Toyo T1Rs) on my black G37 and didn't notice any decrease in acceleration due to wheel/tire size.

I honestly think it may just be in your head.