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15x12 single beadlock wheel, M/T 29.5 x 10.5s tire, no tubes, 3200# raceweight

What would be a good starting tire pressure? I have been running M/T 31x10.5w tires (no tubes) on 15x12 non-beadlock wheels with 9-9.5# of air. Seemed to work well. I was thinking maybe 12# to start? :confused: I'm thinking they'll need a bit more air cause they're smaller but not sure....

Thanks,
Craig
 

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120*+ track temp as low as 13.5 When the track temp is around 85* or less I have gone as high as 18. Seems as though a beadlock will help the sidewall stiffness but I don't have any experience with them. I'd like to see MT make a 3062 in a radial version :smt077
 

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aka hulk
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Me too but that is really low for a heavy car.
everybody's air pressure guage differs.FWIW, i ran 10.5stiff and non stiff, and mine liked 11.5-12psi and my car weighs 3500lbs.
 
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