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1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion. |
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#1
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You are correct in that the difference in the sidewall size is the width of the wheel, but the second number denotes the height of the side wall as a percentage of the width, so even though the number is the same, the sidewall is larger because the tire is wider.
Does that make more sense now? |
#2
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Hahaha....Yes it does. I found the formulas to figure everything up on tirerack.com. I think by trying to set a world standard they made it confusing for some people...like me
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01 F350 7.3 4x4 CC SRW/3.73/315-75-16/Aeroforce Interceptor/BD Thruster II/ Bellowed Up-Pipes/4" turbo back exhaust/CCV Mod/DIY 6637/FPR Shimmed to 65 PSI/TS chip reburned with PHP tunes (Stock, 40T WITH Whsiper tune, 80DD, 100R, 140Ex, 140SS)/Replaced and Cleaned EBPS & Tube 4-6-12/Zoodad mod/Recon smoked cab lights/MM Hubs/Cowl Hood/HPx |
#3
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Glad we could help
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