I just got done trying some 3" back spacing wheels, on my dirt car. They say a narrowed track width helps to get the car to turn in. We start with one wheel inset and go to 2 if we want more. It is truely amazing what wheels spacers and changing offset Will do to the handling of a car. My dirt car can go from being a rocket to a car I cannot turn with just one too many 1/2" wheel spacers.

If Ferrari thinks 2" more width in the front is okay it will probably work for what I am doing.

That is something I had not considered. By widening the front track it will transfer corner weight to the rear? In that case its a win/win.....right?


If the starting point was a relatively narrow car and outside widths of 67.5f/66.5r so I don't know that we could ever get too wide in the front......narrow rear = fast slaloms.

Sorry for the slight hijack......Isn't it time for more pictures?

I was typing this quickly last night and it needs a bit more clarification... We have to keep in mind that what I quoted above is the technically correct track width - which is properly measured from the centerline of the wheels and not the outside edge of the wheels.

So... the most consistent info I could find:

Noble m15
Car Width = 72.8" Front Width = 62.8" Rear Width = 59.2" So the difference in track width is 3.6" wider on the front BUT...
Front wheels = 18 x 8 Rear wheels = 19 x 10.5 Making the difference in wheel width 2.5" wider on the back.
So in reality, measuring from the outside to outside, the front is 0.55" wider than the rear.

Ferrari F430
Car Width = 75.7" Front Width = 65.7" Rear Width = 63.6" So the difference in track width is 2.1" wider on the front BUT...
Front wheels = 19 x 7.5 with +31.5 offset Rear wheels = 19 x 10 with +39 offset Making the difference in wheel width 2.5" wider on the back.
So in reality, measuring from the outside to outside, the rear is 0.4" wider than the front.

Lamborghini Gallardo
Car Width = 78.8" Front Track = 63.74" Rear Track = 62.57" So the difference in track width is 1.17" wider on the front BUT...
Front wheels = 19 x 8.5 Rear wheels = 19 x 11 Making the difference in wheel width 2.5" wider on the back.
So in reality, measuring from the outside to outside, the rear is 1.3" wider than the front.

In the case of the OLC...

Front Track (old) = 65.0" Rear Track (old) =65.0" So 0 difference in front to rear when measuring proper track width...
But...
Front Outside (old) = 68.0" Rear Outside (old) = 71.25" So to be where we wanted we needed to move the front out ~3.25" at the outside

Technically correct although we'll have to see if it is practically correct as well...

More pics coming soon.

Quick pic...

http://www.onelapcamaro.com/1967%20OLCR/shop%20231.jpg

Did these old outside measurements fit under stock fenders and quarters?

"yes" with a but... we did do some work to the lips (but we did not change their shapes)

Aw yeah... :thumbsup:

With a wider front track: Less front cornering load (the term weight should not be used here) is transferred from inside tire to outside tire. This reduces load on the outside front tire, increases load on the inside front tire in a corner and so increases front lateral traction available to the front tires. It will reduce under steer and increase over steer. What can then be done is to re-balance the handling by reducing rear anti-roll bar stiffness, or lowering the watts or Panhard bar. End result is more total cornering grip for the whole car.

There is no change in static weight F/R, but there is in dynamic load transfer percentage front to rear.