Quote:
Originally Posted by icarp
There have been many papers written on the subject of rotating mass .
It is the most important weight to reduce . PERIOD.
I have 15x7 and 8's on my RS clone, 205/60/15 front and 225/60/15 rear
I run V rated mini van tires , They are light , and handle better than most drivers will ever drive to.
39.5 pounds for the rear tires , and 32.5 for the front , complete .
Ian
|
Yes reducing weight is in general a good thing but there are other factors that are in play that have a more significant effect on performance
Here's an example, 2 sets of tires are compared here, both on 7 & 8 x15 Fuchs, the second set has a ~41lb-ft advantage over the first set in first gear, the difference diminishes as you go up through the gears Both are 205/225, the first though is a 60 series tire and the second a 50 series.
The inertial cost difference for the tires alone is ~18lb-ft favoring the lighter and shorter 50 series tires, the rest is the gearing cost incurred buy the taller 60 series tires, So Here the gearing is far more significant than the weight
