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<html class=3D"apple-mail-supports-explicit-dark-mode"><head><meta http-equi=
v=3D"content-type" content=3D"text/html; charset=3Dutf-8"></head><body dir=3D=
"auto">Mark, <div><br></div><div>I didn=E2=80=99t realize that Speedste=
rs were</div><div>40 TW rating tires. Years ago I ran them when 60 series we=
re required but they too hot no pricey. I do remember wearing out a new righ=
t front in one weekend. </div><div> <br id=3D"lineBreakAtBe=
ginningOfSignature"><div dir=3D"ltr">You only get one chance at life, make i=
t a TRIUMPH.</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Oct 7, 2=
026, at 4:48=E2=80=AFPM, Mark Cook <mecook635@gmail.com> wrote:<br><br=
></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div=
dir=3D"ltr"><div>Bob K,</div><div><br></div><div>Thanks - interesting the d=
ifferences between all the "vintage" organizations. Those rules would r=
ule out the Speedster since they are 40TW as well. Seems like they cou=
ld get together and unify the rules somewhat. </div><div><br></di=
v><div>Much appreciated!</div><div><br></div><div>Regards,</div><div><br></d=
iv><div>Mark</div></div><br><div class=3D"gmail_quote gmail_quote_container"=
><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 7, 2026 at 9:11=E2=80=AFA=
M Bob Kramer <<a href=3D"mailto:rkramer56@gmail.com";>rkramer56@gmail.com<=
/a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v dir=3D"ltr">Mark,<div><br></div><div>Here is what our TX based clubs list a=
s tire rules for the class inc;using TR6's. The 100 Minimum tread=
wear rating and required DOT rating technically disqualifies the Hoosie=
r TDR's, but I see plenty of them around the paddock. Google says the T=
DR's are something like 40 TW. Other than that, the price keeps me away=
. I run the 225-50-15 TOYO R888s.<br><div><br></div><div><div><image.png&=
gt;</div></div><div><br></div><div>Bob<br></div></div></div><br><div class=3D=
"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, Oct 4, 2026 at 7=
:38=E2=80=AFAM Mark Cook <<a href=3D"mailto:mecook635@gmail.com"; target=3D=
"_blank">mecook635@gmail.com</a>> wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex"><div dir=3D"ltr"><div>All,</div><div><br></div><di=
v>So, I it is time to replace my Hoosier TDRs on my TR6. This TR6 was p=
reviously run in SCCA with Hoosier R7 SM7.5 (Spec Miata). When I=
purchased the TR6 In 2024, then current VDCA/SVRA tire rules did not allow t=
hese tires and I switched to the TDRs.</div><div><br></div><div>In 2026 SVRA=
and VDCA changed the rules for Group 8/CP to allow the Hoosier R7/R8, a=
s well as the Toyo Proxes RR. It appears that VRG and VSCCA continue t=
o require fully treaded tires in CP/DP classes, like the Hoosier Speeds=
ter and TDR. Though, VRG is deferring to other organizations tire rule=
s in joint events (VIR / Summit Point with VDCA as example).</div><div><br><=
/div><div>I think most of you run in VDCA Group 3, but has anyone running in=
Group 8 CP/DP changed or considering changing to Hoosier R8s or Toyo Proxes=
RR? </div><div><br></div><div>Thanks,</div><div><br></div><div>M=
ark Cook</div><div><br></div></div>
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