OR...
P-size X series X 2 (# of sidewalls)= ?
then...
? divided by 25.4 = ? --> + rim diameter=
Example
P235/75R15
235 X .75 X 2 = 352.5
352.5 divided by 25.4 = 13.87
13.87 + 15" rim = 28.87 inches tall
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the P size is millemeter of rubber width rim bead to rim bead going up sidewall accross tread and down sidewall...
the Series is the Percentage of sidewall. so a 75 series is taller than a 50 series
the first ? is in metric form
you then convert to SAE by dividing by 25.4 for 25.4 mm in 1 inch.
from there you have total rubber height... because you already multipied X 2...
just add your rim diameter...
Hope that helps.....in case you lose the chart... Bryan in So.Dak
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Bryan in South Dakota
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-67 CST originally a 327-4bbl(missing)...w/TH400 w/AC,PS,PB,3pc bucket seat,small window,LWB. orig. drk blue w/blue interior. needs serious restoration
-67 CST(plain janer) 283/MT LWB
-2000 Silverado 1/2ton 2wd x-cab w/4th door
***future projects***
A 67/68 CST,SWB,350/TH350,Lowered 5/7, rollin' on 17's, not air bagged.using above listed 67 CST (janer)
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My Trucks:
1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project
1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver
1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck
1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck
2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White
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