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Old 05-13-2023, 05:22 PM
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FUNFER2 FUNFER2 is offline
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Join Date: Oct 2002
Location: Eagle, Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,310
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Default Sportsman S/R Radial Street/Racetrack Size: 26X12R15

Hello guys, since my Group Buy for the Avon tires fell through, I'm looking at other tires. I've decided against the strip/street radial tires like from M/T. I really want the GoodYear Billboard tires, but their 50/50 on the street from owners. bias-ply's wander, follows the tire grooves, soft compound throw pebbles (what tires don't, but maybe their worse ?) etc.

For some reason, I don't care for the popular Cooper Cobra GT, but man their low in cost, so the next tire is the Looong,....time is the BF Goodrich T/A. Really nice looking tire and just a bit higher cost than the Cooper. The great thing is the white raised letters look good, and the tire thread is pretty similar to the Billboards, so I could them around to the black side and buy the glue on letters from Tredware creating the billboard looks.

I'm also torn between the traction of the strip radials, the Avon and ok traction of the real GY billboards, or the no traction BF T/A and the Coopers.

After building two 428 FE engines because I liked the idea of having a FE as all the street Cobras had them, but I was disappointed with the power, so I spoke with Barry and he suggested building a Ford 460. So I bought a great block and added all great internals, Kaase SR-71 loaded heads, stacked EFI with a Holley Terminator brain, and it should be around 750 HP/TQ. So traction for racing can be quick and no traction will be fun. lol

The other tire selection is the M/T S/R radial. They look great, but will billboard lettering on that "fire" tread look stupid ?

I don't know about the aspect ratio. On M/T website I don't see that information. My tires now are 295/50/15, and I believe they are 26.1"
diameter. I have about 2" room before the tire hits a frame gusset.

https://tiresize.com/tires/Mickey-Th...l-26X12R15.htm

Summit-

https://www.summitracing.com/parts/mtt-6641


Mickey Thompson-

The 26X12R15 Mickey Thompson Sportsman S/R Radial has a diameter of 26.1", a width of 12", mounts on a 15" rim and has 796 revolutions per mile. It weighs 26 lbs, has a max load of 1150 lbs, a maximum air pressure of 35 psi, a tread depth of 8/32" and should be used on a rim width of 8-10".

What's your thoughts ?
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Regards,
Kevin
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