New answers tagged wheels
TireRack has an article specifically on this topic http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=52 -- edit: just found this: http://www.michelinman.com/mediabin/Approved/Michelin/Visuals/Digital/Two_Tire_Poster_Michelin_042009.pdf
There are two main benefits to running alloy rims: As you mentioned, they are lighter. I read an article quite a few years back about sprung weight and un-sprung weight. Sprung weight is the weight which is above and supported by the springs. This would be like the body, engine, transmission, driver, etc. Un-sprung weight is the weight of the vehicle which ...
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