|
1. Depending on how many miles you drive hwy speeds and how many are in town, you may have crossed the line in the trade off
2. Each extra unit of measure (pounds etc) over the factory weight of the tire/wheel is multipled by 4. So now you need more energy to start (gas consumption) and more energy to stop (brake and suspension wear and tear.)
3. if each 17 inch setup weighs just 5lbs more, then the effect of that 5lbs spinning around is 20lb per tire.
4. withuot knowing the size of the 15 inch tires it is impossible to determine anything. Maybe your 17s are actually wider but not as tall as the 15s.. who know????
|