Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
03-02-2017, 04:17 AM
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Re: Uniroyal HR70-15 ??
The Goodyear Custom Tread is the "Steel Belted Radial". Uniroyal, Firestone, and Goodyear all used the same tread that GM dictated to the tire suppliers. The GR70-15 Custom Tread is the one that is currently reproduced in white letter and 3/8" white stripe. GR70-15 fitment was on the Trans Am, Can Am, Buick GS, some 442's.... HR70-15's were probably on big cars/station wagons.
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Snarl softly and carry a big stick! 1969 Hurst/Olds 13.26 @ 103.12 Pure Stock Rusty Small 
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#2
03-02-2017, 10:53 AM
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Re: Uniroyal HR70-15 ??
The Uniroyal GR70x15 was one of the 1973 Trans Am radials if you wanted white stripes. If this is an actual Uniroyal as Verne said, I am wondering what Uniroyal called it on the sidewall. Here's an example. And yes as you mention, that tread looks just like the infamous Firestone 500 tread on my 73 SD.
Uniroyal GR70x15 whitewall:  Firestone 500 GR70x15 white letter: 
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