Originally posted by 1314:
Originally posted by scottd60:
It's all very simple...just do the math.
1st convert "width" mm to "inches" (215mm = 8.464567", 225mm = 8.858268", 235mm = 9.251969")
2nd multiply "width" x "aspect ratio" (50 =.50, 45 =.45, 40 =.40)
sum = "sidewall" (1/2 overall)
3rd multiply "sidewall" x 2 + "wheel diameter" (16", 17", 18")
sum = "tire diameter"
Not as simple as using an online tire calculator  .
http://www.1010tires.com/tiresizecalculator.asp?action=submit
There you go...awesome, I'll add that to my other online performance calculators 
Scott
2000 Contour SVT #1464
Mustang Dyno: 171.6hp/145.3lb
Dynojet Dyno: 171.1hp/148.9lb
1989 20th Anniversary Turbo T/A "Indy 500 Pace Car"
#1376 of 1550 All Original, 46k with a few mods 
2002 F150 SuperCrew
| 
