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    Thread: Wheel weight?

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    1. #4
      Join Date
      Mar 2009
      Location
      SoCal
      Posts
      1,240
      Country Flag: United States
      Short answer. Wheels can't be too light. Wheels can be too heavy.

      Since your build is performance minded, I don't think it will be an issue.



      Sprung weight matters and should generally be minimized (within reason . . . don't go breaking a wheel in a pothole for that last two pounds.) In a road car, the sprung weight is a smaller percentage of the overall weight and is not as critical as it is in an open wheeler or racing sedan. In terms of performance, you do not have to worry about the wheel being too light. The wheel might be too light in terms of strength or cost. Heavy donk style wheels will be detrimental regardless . . . Get something that will let your run the amount of tire you want to run. Run the widest wheel and tire that you can up front that won't give you any rubbing problems. Then don't go too much larger in the rear where you are likely to have more space.


      You'll be doing well (better than most, in fact) if you can get your damping ratios set in the ballpark of 0.65 relative to just the sprung weight. Know your car's maximum (static) corners weights (IE, full load of fuel with both a driver and a passenger for an autox run . . . or maybe you'll do the autox taxi thing and have 4 people in the car), your actual spring rates, your approximate unsprung corner weights, your motion ratios and then go to town figuring out how the shock needs to perform. Focus on the shock's low speed performance, where it will spend most of its time.

      You will need to do some homework on reading shock dyno charts to do this.
      Brett H.

      1979 Pontiac Firebird Trans Am
      1991 Mazda Miata
      2005 Ford Mustang GT

      1987 Ford Mustang GT - Sold 06-29-2014
      1988 Oldsmobile Cutlass Ciera - RIP 9-17-2011
      1992 Chevrolet Corvette - Sold 10-12-2017





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