Tire Update for New Smyrna Speedway

[Benny The Mule]

The groove tires stay cooler making them last longer. The leading edge of the groove promotes grip through the ability to flex. With a slick when you break loose you spin out or crash........period. Like mod8 said. These tires are more (forgiving).

[Don Nerone]

So why do they grove dirt tires if slicks are faster .LOL

don62

[OldSchool+]

Don,

I had the same question. In a previous thread it was determined that dirt tire "grooves" mostly run across the tire so that each of the sharp edges provides a little traction for the spinning tire.

As I understand it, these grooves (obviously) run around the tire and provide cooling and to some extent work in the corners in a similar fashion to the dirt tires except they provide lateral grip, instead of forward bite.

But, ya know, most of that is heresay and/or deduction on my part...

Nonetheless, there have been reports of positive results, so I am hoping for the best. I love them modifieds.

[shorttrackcar1]

so the tire gets better as it get wore out ? I don't believe it. and the groves helps cool the tire . my question is when at any time would a tire have time to cool down when your racing. answer never. and don't say under caution because I bet any tire will cool down under caution . regardless slick, grove, street tire .

[OldSchool+]

ST1:

I agree that conventional thinking/experience indicates that a tire gets hotter as it goes.

But for the sake of discussion, imagine the "heat sinks" you have seen on electronic equipment. A row of fins to dissipate heat into the atmosphere, an "air radiator" if you will. Same deal here wit da tars.

Now, they will get hotter just as you are thinking, but they may be a tick cooler than they would have been without the grooves.

Compound? Again hard to figure, but imagine a candy bar and now put some heat into it--it gets softer, right? Maybe the rubber molecules in the 750 respond to heat in that fashion.

Of course, I just made all that up, so take it with a grain of salt!

ps--Re: wore out. Eventually, of course, the things will reach a point of diminishing returns and stick less--that point just has not been found and/or posted as yet.

Of course, for years Dad has spoken of "Butyl" rubber tires that he had back around '62 that would "handle and stick as good as new right to the cords".

Still though, if that point is beyond what the F-53s had, it may save the racer money.

[jacko241]

Several years ago, Formula 1 required grooved tires, with the intention of decreasing grip to to slow them down. Anytime you decrease grip, you decrease temperature.

[OldSchool+]

Jacko--Agreed--but then, that was their objective.

Their cornering speeds are absurd and I suspect the idea there was less grip due to less contact patch without having tires that looked like they came off a schwinn.

But that doesn't mean that the design goals, execution and results here may entirely different.

Of course, at this point, it doesn't mean they won't be the same (ie slower), either (lol).

[Matt Albee]

Several years ago, Formula 1 required grooved tires, with the intention of decreasing grip to to slow them down. Anytime you decrease grip, you decrease temperature.

Wouldn't a decrease in grip cause tire temps to go up? Seems like with the tires sliding instead of gripping, the temps would increase.

[jacko241]

It would seem so, but that is not the case. Grip equals load, more load equals more heat

[openwm53]

Lol

Here we go again. So know anyone who runs a mod at showtime,citrus,aberndale or Desoto has to buy tires to come race at New Symrna. LOL and they want car counts ? Brilliant. simply brilliant. So 4 tires over there are what ? $525 dollars ? What do they pay the winner for a regular show ? Anyone ?

[openwm53]

Oh Wait

looks like auberndale and Bronson are going to the 750 tire ? Looks like it did three years ago when everyone ran different tires and they all begged for car counts ? What about Citrus ?

[ocalasp76]

looks like auberndale and Bronson are going to the 750 tire ? Looks like it did three years ago when everyone ran different tires and they all begged for car counts ? What about Citrus ?

Citrus is F-53 for OWM... as per their web site.
-JIM-

[EJC Engines]

I'm a poor guy running a super stock can't buy new tires looks like I'll be running the first two races then parking it till I get enough saved up

[8modified]

Just talked to Tim Bryant and Pensacola is on the R750

[scottgarrity07]

I'm a poor guy running a super stock can't buy new tires looks like I'll be running the first two races then parking it till I get enough saved up

One of the reasons NSS wanted to go to this tire was for the option for it to be a legitimate "take-off" tire from the OWM and Sportsman down to the Super Stock guys due to the longevity of it. I would suggest finding a well-funded OWM team and buy their one or two race take-off's!