How much pressure are you running in your M/T drag radials??

[Steve]

How much air pressure are you running in your M/T DR's? I have heard everything from 12 to 30 psi. I have 275/60's on 8" wheels. My car is full weight and it ran a best of 11.01 @ 126 last weekend with only a 1.86 60' on the DR's. I was at 20 psi in them on that run. It would hook decent of the line then spin them 20 or 30' out. My rear susp. was stock with air bags but since then I have installed adjustable uppers and tublar lowers with the pinion angle set to 2 degrees. I just need a good place to start on the air pressure. Thanks

Steve

 

[turbo2nr]

12-13PSI on the 60 series tires. I got a 1.51 on them with 100% stock suspension. Full weight GN. I'd go a little higher on the 50series M/Ts.

 

[azgn]

have made a bunch of 10 sec passes (best of 10.6) with them....best pressure seems to be 26...prolly a function of car weight/track conditions (275X60)

 

[turbo2nr]

What 60' times?

 

[azgn]

low 1.5x....car runs 1.4x on slicks

have to be a little careful about how hard I leave on the DR's....it is possible to blow them away...unlike the slicks

 

[10secBu]

I'm currently running 17.5 lbs in my 275/60-15 M/T ET Street drag radials.

 

[pacecarta]

255/50 16 @ 20 psi
1.62 best 60' , hope to push that a little lower
couple 1.67s before that
3psi boost launch
3670 lb 87 GN hardtop
stock bars front and rear
stock unopened 129K motor
airbags 20 passenger/ 8 driver