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[Fot] VDCA, SVRA, VRG, VSCCA Tire Rules

To: Fot <fot@autox.team.net>
Subject: [Fot] VDCA, SVRA, VRG, VSCCA Tire Rules
From: Mark Cook <mecook635@gmail.com>
Date: Sun, 4 Oct 2026 08:21:01 -0400
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All,

So, I it is time to replace my Hoosier TDRs on my TR6.  This TR6 was
previously 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
these tires and I switched to the TDRs.

In 2026 SVRA and VDCA changed the rules for Group 8/CP to allow the Hoosier
R7/R8, as well as the Toyo Proxes RR.  It appears that VRG and VSCCA
continue to require fully treaded tires in CP/DP classes, like the Hoosier
Speedster and TDR.  Though, VRG is deferring to other organizations tire
rules in joint events (VIR / Summit Point with VDCA as example).

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?

Thanks,

Mark Cook

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<div dir=3D"ltr"><div>All,</div><div><br></div><div>So, I it is time to rep=
lace my Hoosier TDRs on my TR6.=C2=A0 This TR6 was previously run in SCCA w=
ith Hoosier R7 SM7.5 (Spec Miata).=C2=A0 =C2=A0When I purchased the TR6 In =
2024, then current VDCA/SVRA tire rules did not allow these tires and I swi=
tched to the TDRs.</div><div><br></div><div>In 2026 SVRA and VDCA changed t=
he rules for Group 8/CP to allow the=C2=A0Hoosier R7/R8, as well as the Toy=
o Proxes RR.=C2=A0 It appears that VRG and VSCCA continue to require fully =
treaded=C2=A0tires in CP/DP classes, like the Hoosier Speedster and TDR.=C2=
=A0 Though, VRG is deferring to other organizations tire rules in joint eve=
nts (VIR / Summit Point with VDCA as example).</div><div><br></div><div>I t=
hink 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?=C2=A0=
=C2=A0</div><div><br></div><div>Thanks,</div><div><br></div><div>Mark Cook<=
/div><div><br></div></div>

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