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Discussion Starter · #1 ·
Hey guys!



I´m looking to buy my first smart and came upon a 2013 Fortwo Passion 84cv which car looks well kept. However, the factory wheels were replaced (with the help of an 3-5 adapter) with 17" MB alloy wheels and I was wondering how safe this mod is. Also, do you think it might be a source of rattling? Thanks for the help!
 

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Hiya! They may cause more wear on components, but it should be safe to drive if they were mounted correctly.
 

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Correct. More rotating mass = less power. Larger diameter wheels = worse acceleration also, due to a difference in gear reduction it causes.

Real fun one though. Same or less rotating mass can also = less power if the mass is concentrated toward the outer edges of a larger orbit. A larger wheel with a shorter tire, even at the same diameter, robs more power because the weight is further from the fulcrum. Big wheels will feel sporty, but slow.
 
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