Breaking Records with the Solo Motorsports 624HP Time Attack BMW 135i


A closeup of the stays. In all, four of them keep the splitter on the bumper at speed.


You can “get away” with a lot of stuff on a time attack car that doesn’t work on a road racer.

All of these winglets and lips and other pieces of equipment are just waiting to be ripped off as soon as wheel-to-wheel contact occurs. These rubber-band bumper attachments are great for street cars and time trialers, as they are easy to install.

They would get quickly ripped off during even glancing contact. This is why you commonly see flush quarter-turn fasteners or recessed latches securing body components on most standard race cars.


Another view of the splitter, winglets, and stay.

Then again, when you look at things like the DTM series, there are canards and winglets and aero bits everywhere. They generally get broken off and go flying everywhere, all the time. But those cars also cost about 4x what a time trial 135i costs, so, there’s that…


The rear of the car features large 25mm over fenders, again sourced from N5 Tuner.


A large APR GT 250 wing helps keep the rear of the car planted. What’s that hanging off of it?


A race car’s transponder has to be mounted somewhere. Why not on the wing?

For those who listen to the Slip Angle podcast, you may recall a fierce debate about whether or not the transponder being in the front or the back of the car would improve lap times (hint – it doesn't).

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