Tire Update for New Smyrna Speedway

[50racer]

I was told that the tire is the same price

[ocalasp76]

I was told that the tire is the same price

Same as the F-53??
-JIM-

[jacko241]

DD, am I mistaken, aren't the 750s slicks? No, I can't really afford to buy those $2000 tires, but I am fortunate I have a nice brother who can!

[UREZ2PASS]

Here is the tire. It is a slick with grooves. The grooves are designed to promote grip and cool the tire.

The 650 was not a good compound. Hopefully the 750 works better. It's been raced in many areas in the country with great success.

[jacko241]

What tire did the mods run during the World Series?

[dd38]

They ran F-53's

[bowlegs]

Kinda looks like a steer tire. Not saying that is a good or bad thing.

[jacko241]

Thanks DD, I wonder how much slower they are than the F-53?

[8modified]

We tested the R750 and found it to be have good grip and was forgiving.
The test was over three weeks and at 70+ laps it was still as fast as a new set of F53 with 4 heat cycles. It is a bit slower than the F53 for the first 5 to 8 laps then it come in and stay good thru out the test test. we plan on using the test tire in the first race we run with the R750.

[OldSchool+]

"Change is good"--Your Manager

Good for who (lol)?

No one likes change. I certainly don't. But if the 750 is as good as the consistently positive reports, word will quickly get out and it will be hard to sit at home while others race-- for long.

If it is in fact comparable after 8 laps, they would probably be the thing to run (& tune for) asap.

[Benny The Mule]

We tested the R750 and found it to be have good grip and was forgiving.
The test was over three weeks and at 70+ laps it was still as fast as a new set of F53 with 4 heat cycles. It is a bit slower than the F53 for the first 5 to 8 laps then it come in and stay good thru out the test test. we plan on using the test tire in the first race we run with the R750.

Thanks for the details. sounds like a good all around tire that lasts.

[Matt Albee]

Here is the tire. It is a slick with grooves. The grooves are designed to promote grip and cool the tire.

The 650 was not a good compound. Hopefully the 750 works better. It's been raced in many areas in the country with great success.

Slicks don't have grooves, that's why they're called slicks.
Now about that " grooves are designed to promote grip " thing. Grooves mean less surface area on the tread face. How would having less surface area promote grip? Wouldn't more surface area promote grip even better?

[UREZ2PASS]

Slicks don't have grooves, that's why they're called slicks.
Now about that " grooves are designed to promote grip " thing. Grooves mean less surface area on the tread face. How would having less surface area promote grip? Wouldn't more surface area promote grip even better?

It's a slick with grooves. A street tire has tread, therefore it is not a slick.

I got my information from a tire engineer at Hoosier concerning the reasoning for the grooves. He's smarter than both of us. He said the grooves help cool the tire and the edges of the grooves provide more traction.

[bubba]

EZ - laying the tire engineering smacketh down...

[Matt Albee]

It's a slick with grooves. A street tire has tread, therefore it is not a slick.

I got my information from a tire engineer at Hoosier concerning the reasoning for the grooves. He's smarter than both of us. He said the grooves help cool the tire and the edges of the grooves provide more traction.

Then what would you call a slick with no grooves? I'm sure the grooves offer better cooling though i hadn't heard that the tires at NSS have been suffering from overheating. Edges of the grooves provide more traction??? Doesn't make much sense, but if true, street tires with lots and lots of grooves should offer crazy traction on an OWM.
But now i'm curious why Hoosier, and all other race tire manufacturers, make slicks ( tires with no grooves ) at all if the grooved tires are better.