porschercr Posted September 30, 2017 Share Posted September 30, 2017 Does anyone know the wheel size on the Fujimi Porsche Cayman? (17,18 inch?)What is the formula for determining wheel sizes on 1/24th and 1/25 scale cars? Thanks,Trevor Quote Link to comment Share on other sites More sharing options...
Ace-Garageguy Posted October 1, 2017 Share Posted October 1, 2017 Does anyone know the wheel size on the Fujimi Porsche Cayman? (17,18 inch?) What is the formula for determining wheel sizes on 1/24th and 1/25 scale cars? The "formula" is just the same for wheels as it is for determining any other scale measurement on any part of any car. For 1/24 scale, take the real measurement and divide by 24. For 1/25, take the real measurement and divide by 25. So...a 17 inch wheel on a real car would measure .708 inches for 1/24 scale (which is why a digital caliper can be handy). A 17 inch wheel in 1/25 scale would be .68 inches (which is 17.2 mm). The interesting thing here is that one inch in full scale is quite close to 1 mm in 1/25 scale, so you can get pretty close that way too. NOTE: Wheel diameter is NOT measured across the front face of a wheel. Rather, it's measured at the tire mounting surface...and very few model companies regularly get this right for some odd reason.. Quote Link to comment Share on other sites More sharing options...
porschercr Posted October 1, 2017 Author Share Posted October 1, 2017 Thank you, Sir. Quote Link to comment Share on other sites More sharing options...
peteski Posted October 2, 2017 Share Posted October 2, 2017 (edited) The "formula" is just the same for wheels as it is for determining any other scale measurement on any part of any car. For 1/24 scale, take the real measurement and divide by 24. For 1/25, take the real measurement and divide by 25. So...a 17 inch wheel on a real car would measure .708 inches for 1/24 scale (which is why a digital caliper can be handy). A 17 inch wheel in 1/25 scale would be .68 inches (which is 17.2 mm). The interesting thing here is that one inch in full scale is quite close to 1 mm in 1/25 scale, so you can get pretty close that way too. NOTE: Wheel diameter is NOT measured across the front face of a wheel. Rather, it's measured at the tire mounting surface...and very few model companies regularly get this right for some odd reason.. For that reason I add one inch to the tire diameter to get an approximate wheel fact rim diameter (since that is what is used on a model). So to me a a 1:1 17" wheel will be 18 inches in diameter. Edited October 2, 2017 by peteski Quote Link to comment Share on other sites More sharing options...
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