ritch_w
29-09-2005, 09:03 PM
I'm looking to change up from 15" alloys with 195/60/15 tyres to 17" alloys, but am slightly confused with what tyre size to get... I seem to remember that Ian had 225/45/17s, but when checking with a tyre size calculator (http://www.tyresave.co.uk/tyresize.html) get the following results;
Tread Width Profile Height Wheel Diameter Overall Tyre Diameter
195 mm 60% 17 inches 24.21 inches 615 mm
225/45/17 Difference in Diameter: percentage = 3.09% actual = 19 mm
215/45/17 Difference in Diameter: percentage = 1.63% actual = 10 mm
205/45/17 Difference in Diameter: percentage = 0.16% actual = 1 mm
225/40/17 Difference in Diameter: percentage = -0.49% actual = -3 mm
my interpretation of this is a postive % will give a actual higher speed than what the speedo shows.......
whats also confusing is the v6sport uses 215/45/17 and the v6-24 is 195/60/15 which is a 1.63% difference, but would both models have differently calibrated speedos? (i dont think so....) :inquisiti :inquisiti
what size to go for? and which size will maintain speedo accuracy???? :inquisiti
Tread Width Profile Height Wheel Diameter Overall Tyre Diameter
195 mm 60% 17 inches 24.21 inches 615 mm
225/45/17 Difference in Diameter: percentage = 3.09% actual = 19 mm
215/45/17 Difference in Diameter: percentage = 1.63% actual = 10 mm
205/45/17 Difference in Diameter: percentage = 0.16% actual = 1 mm
225/40/17 Difference in Diameter: percentage = -0.49% actual = -3 mm
my interpretation of this is a postive % will give a actual higher speed than what the speedo shows.......
whats also confusing is the v6sport uses 215/45/17 and the v6-24 is 195/60/15 which is a 1.63% difference, but would both models have differently calibrated speedos? (i dont think so....) :inquisiti :inquisiti
what size to go for? and which size will maintain speedo accuracy???? :inquisiti