Slick sizes for stock

[BRETV]

Originally Posted by Rick J

I know radials are quicker, but why?

More tire pressure, less rolling resistance.




Bret Velde
2003 I/SA

[Jeff Stout]

Aluminum baseball bat between tire and quarter panel. Worked good on 85 Camaro

[Mike Gray]

The 28’s got me down the track without rubbing. In the heat it went .400 under the B index on its first full pass. The best run was a 10.76 almost .500 under but I don’t know where my weight is at. That’s the next item to take care of. I know it’s not as light as allowed in A it should be somewhere between A and B weight.
I need to pick up the 60ft times (1.45) with it a little soft on the 2step. How do the radials compare in 60ft times?

[Lenny5160_v2]

I'm reading this and I'm thinking that maybe the tire I run on my S/ST car could be a solution. It is a Hoosier Drag Bracket Radial, 28 x 9. Before I ran this tire, I ran the 30 x 9 radials for 20+ years. I didn't notice any ET change when changing to the shorter tire, although that will depend on each combination relative to how it is geared.

Now, this tire is advertised as having a 9.5" tread width which probably makes it a no-no. I went out in the garage to measure my spare set of wheels with a traditional Stocker 30 x 9 radial on them, and the tread width is 9.375".

The rulebook doesn't exactly clear this up by implying that a tire up to 10" wide may be acceptable if the extra width is due to wear:

Street-type or drag slick tires, maximum 9-inch tread width.
Tires may not be altered from tire manufacturer?s original design
or pattern. Size of tire (new) must not exceed 9-inch wide x 30-
inch diameter (94-inch circumference). Tires may not exceed
10 inches wide regardless of wear.

[1700camaro]

The thread below might shed some light on what Tony is talking about. Then a highlighted description of a Factory Stock Radial Slick.

https://classracer.com/classforum/sh...ad.php?t=86722

[Mike Gray]

I?m thinking the 18210’s will work without rubbing they’re less than a half inch larger than my 29” bias tires.