Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Packwood National Tour
View Single Post
Old 07-21-2011, 12:34 PM   #21
mellephants's Avatar
Join Date: Dec 2007
Fan#: 52400
Location: Urbana, IL
What I Drive: 12 SE, 91 DR350S, 74 CL360

Posts: 2,291
Points 11,352, Level 70
Points: 11,352, Level: 70 Points: 11,352, Level: 70 Points: 11,352, Level: 70
Level Up 26% Completed
Level up: 26% Level up: 26% Level up: 26%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 12 mellephants Great Standing Member
Buy-Sell-Trade Rating: (15)
Originally Posted by fighing2succeed View Post
I'm pretty sure that Ian said that he ran the 225/45 Hoosiers.
That is bewildering. I can't imagine why anybody would run the 225/45/17 on an HS SVTF. Seems pretty clear to me that is is the worst choice of the three sizes. Maybe they were on sale?

Size              Price   Tread    TR Diam    Calc Diam
225/40ZR17   $257    8.9"      23.8"        24.09"
225/45ZR17   $257    8.8"      24.7"        24.97"
245/40ZR17   $266    9.3"      24.5"        24.72"
Edit: The diameters listed on TR for these Hoosiers do not match the calculated diameters for the printed size. I added a column to the above table to show the differences. This sort of thing is common with racing tires; even street-class autocross tires are often wider and shorter than their calculated sizes. For example, the calculated diameter for a standard 215/45/17 is 24.62", which coincidentally rounds to the same 24.7" that TR lists for the 225/45/17 Hoosier A6.
mellephants is offline  
    Reply With Quote