T4 T4 Suspension Rule Cleanup
#40026 from Luis Goncalves · Taken care of · Minutes (2026-06 Fastrack)
Please see letter #40176 in current Fastrack.
BoP Lab / Drivers / Luis Goncalves
Luis Goncalves 14 letters to Fastrack
Against the front of the class, by track and class
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Watkins Glen International (3.40 mi) | T4 | 4 | +5.028s (3.79%) | +3.870s (2.93%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
Watkins Glen International (3.40 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Glen Region Hoosier SCCA Super Tour @ Watkins Glen International | Grp 3 T2,T3,T4 Race 2 | T4 | 3 | Scion FRS | 6/9 | 2:16.143 | 2:12.273Marc Cefalo | +3.870s (2.93%) | 124.47/9 | 127.5Felix Borodaty | -3.1 mph (-2.4%) |
| Glen Region Hoosier SCCA Super Tour @ Watkins Glen International | Grp 3 T2,T3,T4 Race 1 | T4 | 3 | Scion FRS | 10/10 | 2:18.797 | 2:13.104Felix Borodaty | +5.693s (4.28%) | 123.86/10 | 127.3Marc Cefalo | -3.5 mph (-2.7%) |
| Glen Region Hoosier SCCA Super Tour @ Watkins Glen International | Grp 3 T2,T3,T4 Qual 2 | T4 | 3 | Scion FRS | 8/10 | 2:17.845 | 2:12.817Jonathan Neudorf | +5.028s (3.79%) | 121.37/10 | 124.0Felix Borodaty | -2.7 mph (-2.2%) |
| Glen Region Hoosier SCCA Super Tour @ Watkins Glen International | Grp 3 T2,T3,T4 Qual 1 | T4 | 3 | Scion FRS | 7/8 | 2:18.985 | 2:13.123Marc Cefalo | +5.862s (4.40%) | 121.16/8 | 123.1Felix Borodaty | -2.0 mph (-1.6%) |
Letters to Fastrack
T4 Please Remove 3.7L v6 Mustang from T4
#39747 from Luis Goncalves · Taken care of · Minutes (2026-03 Fastrack)
See letter #39230 in February Fastrack.
9.3.55. WINDOW SAFETY NETS
#39403 from Luis Goncalves · Not recommended · Minutes (2026-01 Fastrack)
The Club Racing Board does not recommend this change. Coverage with an SFI 37.1 window net is directly dependent on the size
of the driver’s door window opening.
T4 Request to Remove the 3.7L Mustang in its Entirety from T4
#39402 from Luis Goncalves · Taken care of · Minutes (2026-02 Fastrack)
Please see letter #39230 in current Fastrack.
T4 Request to Allow the 2022+ Toyota GR86/Subaru BRZ into T4
#39401 from Luis Goncalves · Not recommended · Minutes (2026-02 Fastrack)
The 2022+BRZ is not recommended for T4.
T4 FRS Parity
#39184 from Luis Goncalves · Taken care of · Minutes (2025-11 Fastrack)
Thank you for your letter. Please see letter #39251 in current Fastrack.
T4 BRZ/FRS/86 Spring Allowance
#35038 from Luis Goncalves · Rule change · TB 24-01 (2024-01 Fastrack)
In T4 Spec Lines, Scion FR-S/10 series (13-16), change Notes as follows:"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Subaru BRZ/ BRZ Limited (13-16), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
Show 12 more lines
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Subaru BRZ (17-21), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
In T4 Spec Lines, Toyota 86, GT (17-21), change Notes as follows:
"Eibach 82105.320, 4.10582 and SPC 67660 allowed. Eibach 82105.320 sway bar kit allowed. Eibach 4.10582 springs or 225 lb (f)
and 300 lb (r) springs allowed. SPC 67660 allowed. Front strut tower brace allowed. Raceseng, part # raceseng-ft86-r-shock-top
permitted. Non-OEM limited slip differential allowed with +50 lbs. weight penalty. 55mm flat plate restrictor required. Only 17”
wheels permitted."
T4 Scion FRS T4 Suspension Consideration
#35001 from Luis Goncalves · Taken care of · Minutes (2024-01 Fastrack)
Thank you for your letter. Please see letter #35038 in current Fastrack.
T3 FRS/BRZ/86 TS Spec
#32426 from Luis Goncalves · Taken care of · Minutes (2022-07 Fastrack)
Thank you for your letter. Please see letter #31982 in current Fastrack.
T4 FRS/BRZ/86 Wheels
#32411 from Luis Goncalves · No action required · Minutes (2022-04 Fastrack)
Thank you for your letter. At the time of this response, Enkei RPF01 wheels were in stock at Tire Rack. These are the most
popular wheel on the T4 BRZ. The BOP in T4 is based on the BRZ running 7" wide wheels. Any change to that spec would throw
off the class.
T3 BRZ/FRS/86 Aero
#31982 from Luis Goncalves · Not recommended · Minutes (2022-07 Fastrack)
Thank you for your letter. We are sorry about the added expense. The only reason that the BRZ is given a wing, which is unique
in T3, is that the BRZ TS came with that specific one. Requiring the OEM part is consistent with all other wings that exist in T3.
T3 BRZ/FRS/86 Down on Power
#31778 from Luis Goncalves · Not recommended · Minutes (2022-01 Fastrack)
Thank you for your letter. Although your suggestion would help the platform make power, it is not within the scope of the
Touring classes. Additionally, such a change would create a situation where every driver using that spec line would need to
convert to E85 to be competitive. Recent changes were made to the class that should slow down leaders.
T4 BRZ/FRS/86 Suspension
#31675 from Luis Goncalves · Not recommended · Minutes (2022-01 Fastrack)
Thank you for your letter. The BRZ/FRS/86 has been closely monitored and it's current configuration is the basis for the BOP of
the car.
T4 BRZ/FRS/86 Bilstein B14 Coilover
#31297 from Luis Goncalves · Not recommended · Minutes (2021-12 Fastrack)
Thank you for your letter. This is a way to reduce costs, but there are other ways too. Adding this option would muddy the
water by allowing too many alternatives. If it was written in the spec line on day 1, it would be different.
Raceseng cascam camber plates are $450-650. Shocks do not have to be custom. Bilstein B8 shocks are affordable and pretty
good for the money. Not as good as custom, but nobody is making them spent the $.