Correct Tire sizing when changing wheels...
#122
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Originally posted by Z BOY
you may be spot on with your comment about the availability of the 245s over the 255s. i'm hoping to decrease understeer, so i'm gonna run the 255s when my wheels get here.
you may be spot on with your comment about the availability of the 245s over the 255s. i'm hoping to decrease understeer, so i'm gonna run the 255s when my wheels get here.
S-03
BFG KD
BFG KDW
etc...
#123
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I'm hoping to get a 2005 Track in a couple of months. One of the first things I want to do is swap out the rubber; I'm thinking about the S0-3's.
As we all know, the Track rims are 18x8" front and 18x8.5" rear.
Using DTD's caculator, I receieved the following:
Front
225/45/18 --> 245/40/18
Totals are in inches Tire 1 Tire 2 Difference
Sidewall Height: 3.99 3.86 .-13
Section Width: 8.86 9.65 .79
Overall Diameter: 25.97 25.72 -.25
Circumference: 81.59 80.79 -.80
Revs per mile: 800.92 808.71 7.79
Speedo reads: 65 Actual Speed: 64.37 (-.63 mph)
Rear
245/45/18 --> 275/40/18
Totals are in inches Tire 1 Tire 2 Difference
Sidewall Height: 4.34 4.33 .-01
Section Width: 9.65 10.83 1.18
Overall Diameter: 26.68 26.66 -.02
Circumference: 83.82 83.76 -.06
Revs per mile: 779.61 780.20 .59
Speedo reads: 65 Actual Speed: 64.95 (-.05 mph)
These seem to be the best matches when upgrading. According to Tire Rack's specs, the 245/40 will fit on an 8" wide rim but the 275/40 is designed for 9"-11". Is that running the rear too thin?
As we all know, the Track rims are 18x8" front and 18x8.5" rear.
Using DTD's caculator, I receieved the following:
Front
225/45/18 --> 245/40/18
Totals are in inches Tire 1 Tire 2 Difference
Sidewall Height: 3.99 3.86 .-13
Section Width: 8.86 9.65 .79
Overall Diameter: 25.97 25.72 -.25
Circumference: 81.59 80.79 -.80
Revs per mile: 800.92 808.71 7.79
Speedo reads: 65 Actual Speed: 64.37 (-.63 mph)
Rear
245/45/18 --> 275/40/18
Totals are in inches Tire 1 Tire 2 Difference
Sidewall Height: 4.34 4.33 .-01
Section Width: 9.65 10.83 1.18
Overall Diameter: 26.68 26.66 -.02
Circumference: 83.82 83.76 -.06
Revs per mile: 779.61 780.20 .59
Speedo reads: 65 Actual Speed: 64.95 (-.05 mph)
These seem to be the best matches when upgrading. According to Tire Rack's specs, the 245/40 will fit on an 8" wide rim but the 275/40 is designed for 9"-11". Is that running the rear too thin?
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