Raising the BMW top speed limiter: chip tune, factory option or coding
Most BMWs that could go faster leave the factory limited to 250 km/h, M cars included. Three ways lead past that number, and they differ far more than the number suggests.
How do you remove the top speed limiter on a BMW?
On an M car there are three ways past the 250 km/h limit: a chip tune that rewrites the engine software, the factory M Driver’s Package, option 7ME, ordered new, or the same option installed afterwards. The option raises the limit to the factory figure for the model, typically 270 to 305 km/h, not to unlimited.
The 250 km/h limit is policy, not hardware: the German manufacturers’ old gentlemen’s agreement. M cars in particular can go faster, and BMW itself sells the difference as the M Driver’s Package, option 7ME, with a model-specific limit typically 270 to 305 km/h.
Way 1: the chip tuner
Tuning shops rewrite the engine software; going rates in 2026 were roughly 799 to 1,799 euros. It works, and it is a real modification: the maps in the engine controller change, the manufacturer neither recommends nor covers it, and on current, encrypted engine controllers the job can be harder than the price list makes it look.
Way 2: the factory option, ordered new
Ordered with the car, the M Driver’s Package is a four figure option and comes tied to a driver training. Booking it afterwards through a dealer is possible for some models and not for others, and it stays the most expensive route.
Way 3: the same option, coded onto your car
Casto Flasher installs option 7ME itself: no map changed, no part swapped, the electronics simply apply the factory limit for your model, and the app reads the option back off the car afterwards to confirm it is there. BMW offers the option across generations, the current G cars as well as the F80, F82 and F83 M3 and M4 and the pre-facelift F90 M5; whether your exact car can take it is what the free check answers first.
Coding shops offer the same option too, in person or remotely. What differs here is that the check of your exact car comes first, and the installation happens at your car, from your phone.
The price is shown in the app after the free check. You pay once, for one car.
The three ways, side by side
| Chip tune | Factory option, ordered new | The option, installed later | |
|---|---|---|---|
| What changes | The engine software is rewritten | Set at the factory | The factory option is added; no map changes |
| The limit afterwards | Whatever the tuner sets | The factory figure for the model | The factory figure for the model |
| Typical cost | Roughly 799 to 1,799 euros in 2026 | Four figures, with a driver training | Shown in the app after the free check |
| Driver training | No | Included | Not included |
Only the car gets faster
A raised limit is not permission, and the places where it means anything are stretches without a posted limit and the track. BMW ties the factory option to a driver training for a reason; the training is theirs, and we cannot deliver it with the coding.
Tyres, brakes and judgement matter more above 250 than below it. If that sentence reads like a lecture, this option may not be for you.
Answers
What does raising the Vmax limit really cost?
At a tuning shop, roughly 799 to 1,799 euros in 2026; ordered from the factory, a four figure amount tied to a training. Our price is shown in the app after the free check of your car; you pay once, per car.
What happens to my warranty?
Changes to your car can affect what a dealer covers. We are not the manufacturer and cannot speak for them. If this matters to you, ask your dealer before you buy, and remove the feature before a service visit.
Does the limit disappear completely?
No. The limit the factory assigns your model with the option applies, typically 270 to 305 km/h depending on the car. A car with no limit at all is chip tuning territory, with everything that brings.
Whether your M can take the option, the app tells you for free
A few minutes at the car, and you pay only after your own car has said yes.
