What is the ratio of width/radius of F1 tyre?

[ysyy88]

where can I search such parameters？

Or anyone can give one roughly？

[finishline]

Have you tried looking at the FIA technical regulations? http://www.fia.com/sport/Regulations/f1regs.html

[ysyy88]

Have you tried looking at the FIA technical regulations? http://www.fia.com/sport/Regulations/f1regs.html

a little.

i just need a rough number

[Jersey Tom]

Should take you no more than 5 minutes either in the regs or a Google search to come up with the OD and width of current F1 tires. Wheels are 13". Just calc it out.