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      02-04-2013, 08:56 PM   #44
CanAutM3
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Drives: 2015 M4 DCT
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2015 BMW M4  [4.75]
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Quote:
Originally Posted by Bmw135er View Post
No one has mentioned tire differences causing a reduction in dyno results here. Tires with additional siping in them cost power as well. Back when I had my Evo it dropped 15hp switching from Pilot Sports to Conti All Seasons. No changes in equipment, and same day dyno results. I swapped them just for fun, same wheel fitments.
Often times guys and girls swap wheels but also run different tires, which will vary the results as well.
Very good point