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I have two sets of MT tires mounted up, 315x60x15 ET streets and a set of 13.50x30x15 ET Street bias ply,(both on ten inch rims that weigh the same ) the radials are diffentitly(SP?) heavier than the bias plys The radails on a good track are around .15 quicker or more and 2 to 3 MPH faster than the ET Streets are on my car the same day

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I have two sets of MT tires mounted up, 315x60x15 ET streets and a set of 13.50x30x15 ET Street bias ply,(both on ten inch rims that weigh the same ) the radials are diffentitly(SP?) heavier than the bias plys The radails on a good track are around .15 quicker or more and 2 to 3 MPH faster than the ET Streets are on my car the same day

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I have two sets of MT tires mounted up, 315x60x15 ET streets and a set of 13.50x30x15 ET Street bias ply,(both on ten inch rims that weigh the same ) the radials are diffentitly(SP?) heavier than the bias plys The radails on a good track are around .15 quicker or more and 2 to 3 MPH faster than the ET Streets are on my car the same day

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what air preasure you running with the radials

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I have tried 17 lbs to 22 lbs(in one lb increments) on my bycycle LCD pocket tire gauge, not much difference in reaction or 60 ft. times

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i was told those tires would not be bald if you didnt leave those black marks on the cutoff road

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That had something to do with it .
It was quicker on the radials too, most of it in 60' and I will order another pair. The only thing about the radials I didn't like was if it ever spun the tires it was hard to recover from, not so with the slicks. If I ever buy new slicks they'll be a stiff side wall, the car weighs 3300#.