Login Register Sign up for the GRM e-newsletter

Login to post Forums » Grassroots Motorsports » Okay, I feel dumb, but I have to ask (tire content)
  • scardeal

    June 6, 2011 11:40 a.m. scardeal HalfDork

    I'm trying to sort out different tire classifications, but I can't seem to find a few answers:

    Please correct me if I'm wrong on any of this.

    "true street tire" - 140 or more treadwear rating, radial tires (generally), used in ST classes

    R-Compound - DOT approved radial, < 140 treadwear rating, ex Hoosier A6, used in stock/street prepared classes

    bias ply slicks?

    cantilevered slicks???

    drag slicks - wrinkle wall stuff... not sure of construction

    drag radial - radial tire optimized for drag racing - soft sidewall, sticky tread compound?

    Anything I'm missing?

  • mw

    June 6, 2011 12:44 p.m. mw HalfDork

    Are you asking what bias ply and cantilever slicks are? Both are actually bias ply slicks which are just slicks made in bias ply construction as opposed to radials. Cantilever slicks have a much wider tread surface than the rim they are supposed to be mounted on. They are usually used in classes where a max rim widths spec'd but tires are open.

    The rest looks good to me.

  • scardeal

    June 6, 2011 12:57 p.m. scardeal HalfDork

    Are there radial (true, not just R-comp) slicks?

    My understanding was slicks == bias ply

  • 93EXCivic

    June 6, 2011 1:14 p.m. 93EXCivic SuperDork

    scardeal wrote:

    Are there radial (true, not just R-comp) slicks?

    My understanding was slicks == bias ply

    Yes there are plenty of radial slicks

  • jstein77

    June 6, 2011 1:58 p.m. jstein77 Dork

    Like these Hoosiers

  • scardeal

    June 6, 2011 2:38 p.m. scardeal HalfDork

    So, are bias ply slicks considered yesterday's news like they are in street tires?

  • 93EXCivic

    June 6, 2011 3:23 p.m. 93EXCivic SuperDork

    scardeal wrote:

    So, are bias ply slicks considered yesterday's news like they are in street tires?

    Not necessarily. Radials are less predictable when they reach their grip limit.

 
Tire Rack- Revolutionizing Tire Buying

You'll need to log in to post.