NASA TT Racing

[beattiecj]

Hey All,

Anyone on here have experience running NASA TT specifically TT4(I think this is the correct class? I am thinking of 2019 plans and running my 135i in TT just to have some additional fun during a track day weekend. Currently in group 3, but should be able to move to group 4 no problem.

Keep in mind I am not trying to go nuts and plan to upgrade the oil cooler and possibly have a set of Hoosier A7s at most. I still need to drive to car on a regular basis.

Current Setup:
Suspension:
- Ohlins R&T with stiffer swift springs
- Vorschlag Camber Plates

Brakes:
- Stock Rotors
- Carbotech XP10/8 pads

Wheel/Tire:
- Apex EC7s
- Hankook RS4s 235F & 265R

Drivetrain/Engine
- BMW PPK
- Corsa Axle Back Exhaust

Questions:
- Is the 135i N55 competitive or semi-competitive with out significant modifications?
- Recommended mods?
- Tips tricks or general advice?

[spxxx]

Originally Posted by beattiecj

Hey All,

Anyone on here have experience running NASA TT specifically TT4(I think this is the correct class? I am thinking of 2019 plans and running my 135i in TT just to have some additional fun during a track day weekend. Currently in group 3, but should be able to move to group 4 no problem.

Keep in mind I am not trying to go nuts and plan to upgrade the oil cooler and possibly have a set of Hoosier A7s at most. I still need to drive to car on a regular basis.

Current Setup:
Suspension:
- Ohlins R&T with stiffer swift springs
- Vorschlag Camber Plates

Brakes:
- Stock Rotors
- Carbotech XP10/8 pads

Wheel/Tire:
- Apex EC7s
- Hankook RS4s 235F & 265R

Drivetrain/Engine
- BMW PPK
- Corsa Axle Back Exhaust

Questions:
- Is the 135i N55 competitive or semi-competitive with out significant modifications?
- Recommended mods?
- Tips tricks or general advice?

In TT4, yes. My car runs street tires and power right on the brink of TT3/4 trim. I run it in TTU as I'm lazy and never got it dynoed with this tune. In Nasa NorCal my times would generally land me a podium in TT4. I personally don't like running with them as the amount of seat time isn't worth their cost IMO.

With the low-end torque of our cars you would need a pretty low power tune and street tires to land in TT4 (slicks will probably bump you to TT3).

[bionicbelly]

I run a 128, but have been competitive in 5. It is the beauty of the NASA system. weight to horsepower classing keeps a very level playing field. With that suspension, brake setup, you should be in good shape.

The only suggestion I would make would be to go to a square set up on wheels and tires. Or don't. Just make sure to get out there. It is a blast.

[beattiecj]

Thanks guys bionicbelly enjoy your TT thread and build!