I'll just use this post to host some pictures. 205/50/17 tire on a 9" rim

Tires before drift day

Worn tires after the drift day, washed and ready to change over

Weighted my car, no seats, no driver, full tank of fuel = 1240kg

I put a plastic transparent plate to separate my air filter from the rest of the engine room

How many drift cars on one picture in my yard? :)