Detroit Region SCCA and Waterford Hills Road Racing present

Jerry Shiloff Memorial Race

2026 Joint Regional Qualifying Races

Spec Racer and Spec Miata Invitational

May 23 - 24, 2026

Waterford Hills Raceway

Sanction # 26-R-xxxxx

Registration for Drivers and Crew

See the latest updates at www.drscca.org

If you are interested in registering as a volunteer, please go to: http://msreg.com/DRSCCA-WHRRI-May2026-Volunteers

TIRE VENDOR: There will be a tire vendor available at the track. Please contact Ken Berman with Motorsport Tire 2 by phone at 248/595-9953 or by email at Kenneth.Berman@att.net.

Some updates on the DRSCCA/WHRRI Weekend:

FRIDAY PRACTICE: Contact the Track Rental agent, Dave Hinman at (248) 202-9186, rental@waterfordhills.com, about the test day scheduled for Friday, May 22. This day is not sanctioned by the SCCA or Detroit Region SCCA.

Paddock Rules: Paddock speed limit is 5 mph and will be enforced. This includes the paddock access road.

Space in the paddock is limited, so everyone will need to do their best to share space and follow the paddock map. It is recommended to share paddock space and resources so everyone can benefit. Waterford Hills maintains reserved spots in the paddock, and a map of open spaces is at: http://www.waterfordhills.com/forms.html.
Based on the number of registrants, paddock spaces may be assigned. If paddock spaces are assigned, entrants will be limited to 1 support vehicle for this weekend. If assigned spaces are required, those WHRRI reserved spaces will be released, and these spots will be reassigned by WHRRI as necessary.
No bicycles, skateboards, or other pit vehicles are allowed on the Oakland County Sportsman’s Club grounds.
All vehicles within the paddock must display an support vehicle pass and be within their designated paddock area or they will be required to be removed.
Paddocking race cars in the Campgrounds or Turn 6 bleacher area is prohibited.

Car Eligibility: Competition is open to all cars conforming to the SCCA GCR, as amended in the event class list below, and to those supplemental classes listed in the 2025 Great Lakes Division Regional Series Rules.

All cars are required to use a fully operational AMB TranX260 transponder.
- Tech will have a transponder tester, during Tech hours (Friday, May 22, 2026 – 5:15-7 pm; Saturday, May 23, 2026 – 8 am – end of day; Sunday, May 24, 2026 – 8:30 am – end of day).
- The driver is responsible for providing correct information to Timing & Scoring. Transponders are available to rent from WHRRI, if necessary, for a $40 fee.
Spec Renault: The WHRRI Rules for Spec Renault can be found here: http://www.waterfordhills.com/data/downloads/2025-WHRRI-Rules-and-Regs.pdf, Appendix B

Documents

Supplemental Regulations including Groups and Schedule of Events: Supp Regs - May 2026 Joint Regional.pdf

SR/SRF/SRF3 Invitational Race (Saturday): Spec Racer Invitational 2025 - Waterford Hills.pdf

SM Invitational Race (Sunday): Spec Miata Invitational 2025.pdf

2025-Paddock-Space-Map: http://www.waterfordhills.com/data/downloads/2021-Paddock-Space-Map.pdf

2025 Reserved Paddock Spots: available approx April 5th at http://www.waterfordhills.com/forms.html

2025 WHRRI Reserved Numbers: available approx April 15th

Race Groups

Group 1	ITA, ITS, EP, FP, HP, T4, GTL**	Group 5	SM, SMX
Group 2	SRF, SRF3, SR*	Group 6	FA, FB, FC, FE, FV, FF, F6, CFF, FS, FST, CFC, ASR, P, P2, S2**
Group 3	ITB, ITC, B-SPEC, STL, T3, IT7**	Group 7	Saturday: SR/SRF/SRF3 Invitational Sunday: Spec Miata Invitational
Group 4	GT1, GT2, GT3U, ITR, ITE, SP, T1, T2, GTA**, GTX, STU, SPU, AS

** = Great Lakes Division Regional Classes * = WHRRI Specific Classes

Please remember: SCCA races are staffed by volunteers. Any help your race team can provide, even for a session or two will be appreciated. Please consider helping out in Timing and Scoring or one of the other specialties.

For Registration Questions Please contact: Mary Shiloff at mshiloff@comcast.net