Anyone have these tires? Mine are 18" on the rear 275/40/18 i want to race tonight and was thinking about dropping the air to about 25-30 pounds. To help traction. how much air can you remove on street tires to race. Sorry i sold my drag radials too soon.

 

You can drop them to a little over 20. The thing is, lower isn't always better. Start at about 25, and keep dropping like 2psi every run until you find something you like.