Hoseir tire pressure

[WildBill3]

Hey we will be autoxing our hoosers for the first time this weekend with the coupe what pressure front to rear do you guys run.thanksWildB

[Curt C.]

what hoosiers do you have? I run the TD's 27R, 25F

[emanon]

Hoosier Radial Air Pressure Recommendation
The Hoosier Radial Seems to work with these initial settings:
Autocross pressures on concrete:
End of car with engine 48-58lbs
Other end of car 34-44 lbs.
Pressures can usually be dropped 6-12lbs if run on a low traction surface.
Road race pressures:

End of car with engine 34-46lbs hot
Other end of car 32-40lbs hot
Under inflation will kill the radials. A thin ring will form on the outside shoulder, it will look like you took your fingernail and scooped the shoulder off the tread. If you see this ring forming on your tires, add 6lbs of air immediately. Another indicator of under inflation is the Hoosier Radials will feel `mushy' in transient response. We have noticed a 10lb range where the pyrometer will report ideal air pressure settings. On the low side of the range, the tire was `mushy' in response and tire wear was not acceptable. The high side of the range produced the best times and tire wear. Recommendation, start high with the air pressures and work Down. This may result in a lack of grip if you grossly over inflate the tire, but you won't wear off the outer edge like under inflation will.

When setting the optimum air pressure for any race tire it's best to use a pyrometer! You CAN NOT use the method of `chalking the sidewall' to set the air pressure for Hoosier radials. This technique will cause premature wear from being under inflated. At no time should you ever have roll over onto the sidewall of a Hoosier radial. The bias ply tires however, chalking the sidewall will get you close to the proper air pressure. For maximum performance and tire life you should use a pyrometer.