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Here is how tire math works: Sports pkg tires wheels: Front: 19 x 9 @ 245/40/19 which means the sidewall height is going to be 40% of 245 so if
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A True Z Fanatic
Join Date: Apr 2009
Location: Sacramento, CA
Posts: 2,188
Drives: 370z MB 6mt
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Here is how tire math works:
Sports pkg tires wheels: Front: 19 x 9 @ 245/40/19 which means the sidewall height is going to be 40% of 245 so if you wanted to run a wider tire on the same rim... just make sure this formula applies: 0.40 * 245 = 0.35 (or even lower if you can find tires) * X where X is your new width... similarly in the rear you would run the following: 0.35 * 275 = 0.30 * X (new width)... You do this to ensure your rotational radius is kept as close to stock as possible (you will otherwise throw off electronics that use revolutions per min / sec off your tire...) - not to mention your speed readout lol.. |
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